Great agitation and anxiety caused by the expectation or the realization of danger

• cold feet

  1. Fearfulness or timidity preventing the completion of a course of action.

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  1. Fearfulness or timidity preventing the completion of a course of action.

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• trepidation

  1. A state of alarm or dread; apprehension.
  2. An involuntary trembling or quivering.

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  1. A state of alarm or dread; apprehension.
  2. An involuntary trembling or quivering.

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• terror

  1. Intense, overpowering fear.
  2. One that instills intense fear:
  3. The ability to instill intense fear:

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  1. Intense, overpowering fear.
  2. One that instills intense fear:
  3. The ability to instill intense fear:

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• panic

  1. A sudden, overpowering feeling of fear, often affecting many people at once.
  2. A state of extreme anxiety, such as that involved in a panic attack.
  3. A state of frantic activity, usually accompanied by extreme concern or anxiety:

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  1. A sudden, overpowering feeling of fear, often affecting many people at once.
  2. A state of extreme anxiety, such as that involved in a panic attack.
  3. A state of frantic activity, usually accompanied by extreme concern or anxiety:

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• horror

  1. An intense, painful feeling of repugnance and fear.
  2. A state or condition marked by this feeling:
  3. An intense dislike or abhorrence:

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  1. An intense, painful feeling of repugnance and fear.
  2. A state or condition marked by this feeling:
  3. An intense dislike or abhorrence:

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• funk

  1. A strong, usually unpleasant smell; reek.

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  1. A strong, usually unpleasant smell; reek.

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• fright

  1. Sudden intense fear, as of something immediately threatening.
  2. Something extremely unsightly, alarming, or strange:
  3. To frighten.

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  1. Sudden intense fear, as of something immediately threatening.
  2. Something extremely unsightly, alarming, or strange:
  3. To frighten.

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• fearfulness

  1. The quality of being fearful

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  1. The quality of being fearful

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• fear

  1. A very unpleasant or disturbing feeling caused by the presence or imminence of danger:
  2. A state or condition marked by this feeling:
  3. A feeling of disquiet or apprehension:

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  1. A very unpleasant or disturbing feeling caused by the presence or imminence of danger:
  2. A state or condition marked by this feeling:
  3. A feeling of disquiet or apprehension:

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• dread

  1. To be in terror of; fear intensely:
  2. To anticipate with alarm, distaste, or reluctance:
  3. To hold in awe or reverence.

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  1. To be in terror of; fear intensely:
  2. To anticipate with alarm, distaste, or reluctance:
  3. To hold in awe or reverence.

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• apprehension

  1. Fearful or uneasy anticipation of the future; dread.
  2. The act of seizing or capturing; arrest.
  3. The ability to apprehend or understand; understanding.

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  1. Fearful or uneasy anticipation of the future; dread.
  2. The act of seizing or capturing; arrest.
  3. The ability to apprehend or understand; understanding.

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• affright

  1. To arouse fear in; terrify:
  2. Great fear; terror.
  3. A cause of terror.

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  1. To arouse fear in; terrify:
  2. Great fear; terror.
  3. A cause of terror.

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A signal that warns of imminent danger

• warning

  1. A statement telling of or an indication providing evidence of impending danger, difficulty, or misfortune:
  2. Advice to be cautious:
  3. A cautionary or deterrent example:

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  1. A statement telling of or an indication providing evidence of impending danger, difficulty, or misfortune:
  2. Advice to be cautious:
  3. A cautionary or deterrent example:

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• tocsin

  1. An alarm sounded on a bell.
  2. A bell used to sound an alarm.
  3. A warning; an omen.

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  1. An alarm sounded on a bell.
  2. A bell used to sound an alarm.
  3. A warning; an omen.

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• alert

  1. Vigilantly attentive; watchful:
  2. Mentally responsive and perceptive; quick.
  3. Brisk or lively in action:

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  1. Vigilantly attentive; watchful:
  2. Mentally responsive and perceptive; quick.
  3. Brisk or lively in action:

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• alarum

  1. A warning or alarm, especially a call to arms.

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  1. A warning or alarm, especially a call to arms.

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To fill with fear

• fright

  1. Sudden intense fear, as of something immediately threatening.
  2. Something extremely unsightly, alarming, or strange:
  3. To frighten.

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  1. Sudden intense fear, as of something immediately threatening.
  2. Something extremely unsightly, alarming, or strange:
  3. To frighten.

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• terrorize

  1. To fill or overpower with terror; terrify.
  2. To coerce or intimidate by causing fear.

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  1. To fill or overpower with terror; terrify.
  2. To coerce or intimidate by causing fear.

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• terrify

  1. To fill with terror; make deeply afraid:
  2. To drive or force by arousing fear:

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  1. To fill with terror; make deeply afraid:
  2. To drive or force by arousing fear:

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• startle

  1. To cause to make a quick involuntary movement or start.
  2. To alarm, frighten, or surprise suddenly.
  3. To become alarmed, frightened, or surprised.

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  1. To cause to make a quick involuntary movement or start.
  2. To alarm, frighten, or surprise suddenly.
  3. To become alarmed, frightened, or surprised.

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• scarify

  1. To make shallow cuts in (the skin), as when vaccinating.
  2. To create a design on (the skin) by means of shallow cuts that are sometimes rubbed with a colorant or irritant to enhance the resulting scar tissue.
  3. To break up the surface of (topsoil or pavement).

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  1. To make shallow cuts in (the skin), as when vaccinating.
  2. To create a design on (the skin) by means of shallow cuts that are sometimes rubbed with a colorant or irritant to enhance the resulting scar tissue.
  3. To break up the surface of (topsoil or pavement).

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• scare

  1. To strike with sudden fear; alarm.
  2. To become frightened:
  3. A condition or sensation of sudden fear:

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  1. To strike with sudden fear; alarm.
  2. To become frightened:
  3. A condition or sensation of sudden fear:

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• panic

  1. A sudden, overpowering feeling of fear, often affecting many people at once.
  2. A state of extreme anxiety, such as that involved in a panic attack.
  3. A state of frantic activity, usually accompanied by extreme concern or anxiety:

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  1. A sudden, overpowering feeling of fear, often affecting many people at once.
  2. A state of extreme anxiety, such as that involved in a panic attack.
  3. A state of frantic activity, usually accompanied by extreme concern or anxiety:

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• frighten

  1. To fill with fear; alarm.
  2. To drive or force by arousing fear:
  3. To become afraid:

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  1. To fill with fear; alarm.
  2. To drive or force by arousing fear:
  3. To become afraid:

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• affright

  1. To arouse fear in; terrify:
  2. Great fear; terror.
  3. A cause of terror.

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  1. To arouse fear in; terrify:
  2. Great fear; terror.
  3. A cause of terror.

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To notify (someone) of imminent danger or risk

• warn

  1. To notify or make aware in advance of something, especially of possible danger or misfortune:
  2. To make known (a warning):
  3. To advise or caution (someone) about a course of action:

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  1. To notify or make aware in advance of something, especially of possible danger or misfortune:
  2. To make known (a warning):
  3. To advise or caution (someone) about a course of action:

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• forewarn

  1. To warn in advance.

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  1. To warn in advance.

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• caution

  1. Careful forethought to avoid danger or harm.
  2. Close attention or vigilance to minimize risk:
  3. Prudence or restraint in action or decision:

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  1. Careful forethought to avoid danger or harm.
  2. Close attention or vigilance to minimize risk:
  3. Prudence or restraint in action or decision:

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• alert

  1. Vigilantly attentive; watchful:
  2. Mentally responsive and perceptive; quick.
  3. Brisk or lively in action:

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  1. Vigilantly attentive; watchful:
  2. Mentally responsive and perceptive; quick.
  3. Brisk or lively in action:

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• admonish

  1. To counsel (another) against something to be avoided or warn (that something is dangerous):
  2. To urge or exhort (someone to do something):
  3. To remind (someone) of something forgotten or disregarded, as an obligation or a responsibility.

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  1. To counsel (another) against something to be avoided or warn (that something is dangerous):
  2. To urge or exhort (someone to do something):
  3. To remind (someone) of something forgotten or disregarded, as an obligation or a responsibility.

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Anything that gives a warning

• chicken switch

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• escape button

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• panic-button

  1. A signal for a hasty emotional response to an emergency:

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  1. A signal for a hasty emotional response to an emergency:

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• air-raid-siren

  1. A siren that makes a very loud alarm sound to warn the population of an upcoming danger; usually an air raid or a tornado.

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  1. A siren that makes a very loud alarm sound to warn the population of an upcoming danger; usually an air raid or a tornado.

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• scream

  1. To utter a long loud piercing cry, as from pain or fear.
  2. To make a loud piercing sound:
  3. To speak or write in an excited or fearful manner.

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  1. To utter a long loud piercing cry, as from pain or fear.
  2. To make a loud piercing sound:
  3. To speak or write in an excited or fearful manner.

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• yell

  1. To cry out loudly, as in pain, fright, surprise, or enthusiasm.
  2. To utter or express with a loud cry.
  3. A loud cry; a shout.

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  1. To cry out loudly, as in pain, fright, surprise, or enthusiasm.
  2. To utter or express with a loud cry.
  3. A loud cry; a shout.

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• squeal

  1. To give forth a loud shrill cry or sound.
  2. To turn informer; betray an accomplice or secret.
  3. To utter or produce with a squeal.

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  1. To give forth a loud shrill cry or sound.
  2. To turn informer; betray an accomplice or secret.
  3. To utter or produce with a squeal.

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• cry

  1. To shed tears, especially as a result of strong emotion such as grief, sorrow, pain, or joy.
  2. To call loudly; shout.
  3. To utter a characteristic sound or call. Used of an animal.

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  1. To shed tears, especially as a result of strong emotion such as grief, sorrow, pain, or joy.
  2. To call loudly; shout.
  3. To utter a characteristic sound or call. Used of an animal.

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• signal of distress

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• danger-signal

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• hue-and-cry

  1. A public clamor, as of protest or demand:
  2. The pursuit of a felon announced with loud shouts to alert others who were then legally obliged to give chase.
  3. The loud outcry formerly used in such a pursuit.

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  1. A public clamor, as of protest or demand:
  2. The pursuit of a felon announced with loud shouts to alert others who were then legally obliged to give chase.
  3. The loud outcry formerly used in such a pursuit.

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• war cry

  1. A cry uttered by combatants as they attack; a battle cry.
  2. A phrase or slogan used to rally people to a cause.

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  1. A cry uttered by combatants as they attack; a battle cry.
  2. A phrase or slogan used to rally people to a cause.

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• beat of drum

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• sound of trumpet

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• warning sound

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• summons to arms

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• call to arms

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• alarm-bell

  1. (historical) A bell rung to signal danger or emergency.
  2. A bell which is rung to indicate a pre-arranged time, especially to mark a desired moment for waking up, performing a specific action etc.
  3. Used other than as an idiom: see alarm,‎ bell.

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  1. (historical) A bell rung to signal danger or emergency.
  2. A bell which is rung to indicate a pre-arranged time, especially to mark a desired moment for waking up, performing a specific action etc.
  3. Used other than as an idiom: see alarm,‎ bell.

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• shout

  1. A loud cry.
  2. To say with or utter a shout.

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  1. A loud cry.
  2. To say with or utter a shout.

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• blast

  1. A very strong gust of wind or air.
  2. The effect of such a gust.
  3. A forcible stream of air, gas, or steam from an opening, especially one in a blast furnace to aid combustion.

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  1. A very strong gust of wind or air.
  2. The effect of such a gust.
  3. A forcible stream of air, gas, or steam from an opening, especially one in a blast furnace to aid combustion.

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• hoot

  1. To utter the characteristic cry of an owl.
  2. To make a loud raucous cry, especially of derision or contempt.
  3. To shout down or drive off with jeering cries:

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  1. To utter the characteristic cry of an owl.
  2. To make a loud raucous cry, especially of derision or contempt.
  3. To shout down or drive off with jeering cries:

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• red-light

  1. The red-colored light that signals traffic to stop.
  2. A command to stop.

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  1. The red-colored light that signals traffic to stop.
  2. A command to stop.

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• mayday

  1. An international radiotelephone signal word used by aircraft and ships in distress.

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  1. An international radiotelephone signal word used by aircraft and ships in distress.

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• sos

  1. The letters that are represented by the Morse code signal · · · – – – · · ·, used as an international distress signal, especially by ships and aircraft.
  2. A call or signal for help.

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  1. The letters that are represented by the Morse code signal · · · – – – · · ·, used as an international distress signal, especially by ships and aircraft.
  2. A call or signal for help.

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• distress signal

  1. An international signal used by a distressed ship or aircraft to request help.

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  1. An international signal used by a distressed ship or aircraft to request help.

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• trumpet

  1. A soprano brass instrument consisting of a long metal tube looped once and ending in a flared bell, the modern type being equipped with three valves for producing variations in pitch.
  2. Something shaped or sounding like this instrument.
  3. An organ stop that produces a tone like that of the brass instrument.

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  1. A soprano brass instrument consisting of a long metal tube looped once and ending in a flared bell, the modern type being equipped with three valves for producing variations in pitch.
  2. Something shaped or sounding like this instrument.
  3. An organ stop that produces a tone like that of the brass instrument.

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• drum

  1. A percussion instrument consisting of a hollow cylinder or hemisphere with a membrane stretched tightly over one or both ends, played by beating with the hands or sticks.
  2. A sound produced by this instrument.
  3. Something resembling a drum in shape or structure, especially a barrellike metal container or a metal cylinder wound with cable, wire, or heavy rope.

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  1. A percussion instrument consisting of a hollow cylinder or hemisphere with a membrane stretched tightly over one or both ends, played by beating with the hands or sticks.
  2. A sound produced by this instrument.
  3. Something resembling a drum in shape or structure, especially a barrellike metal container or a metal cylinder wound with cable, wire, or heavy rope.

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• whistle

  1. To produce a clear musical sound by forcing air through the teeth or through an aperture formed by pursing the lips.
  2. To produce a clear, shrill, sharp musical sound by passing air over or through an opening:
  3. To produce a high-pitched sound when moving swiftly through the air:

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  1. To produce a clear musical sound by forcing air through the teeth or through an aperture formed by pursing the lips.
  2. To produce a clear, shrill, sharp musical sound by passing air over or through an opening:
  3. To produce a high-pitched sound when moving swiftly through the air:

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• gong

  1. A rimmed metal disk that produces a loud, sonorous tone when struck with a padded mallet.
  2. A usually saucer-shaped bell that is struck with a mechanically operated hammer.
  3. To make the sound of a gong.

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  1. A rimmed metal disk that produces a loud, sonorous tone when struck with a padded mallet.
  2. A usually saucer-shaped bell that is struck with a mechanically operated hammer.
  3. To make the sound of a gong.

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• foghorn

  1. A horn for sounding warning signals in fog or darkness, used especially on ships, buoys, and coastal installations.
  2. A booming, insistent voice.

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  1. A horn for sounding warning signals in fog or darkness, used especially on ships, buoys, and coastal installations.
  2. A booming, insistent voice.

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• fire-bell

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• fire-alarm

  1. A device, such as a siren, used in announcing the outbreak of a fire.
  2. The signal, especially the noise, produced by such a device.

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  1. A device, such as a siren, used in announcing the outbreak of a fire.
  2. The signal, especially the noise, produced by such a device.

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• burglar-alarm

  1. a warning device that is tripped off by the occurrence of a burglary
  2. a loud warning signal produced by a burglar alarm

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  1. a warning device that is tripped off by the occurrence of a burglary
  2. a loud warning signal produced by a burglar alarm

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• alarm-clock

  1. A clock that can be set to wake someone up or alert attention at a particular time, as by sounding a bell or buzzer.

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  1. A clock that can be set to wake someone up or alert attention at a particular time, as by sounding a bell or buzzer.

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• call

  1. To say in a loud voice; announce:
  2. To demand or ask for the presence of:
  3. To demand or ask for a meeting of; convene or convoke:

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  1. To say in a loud voice; announce:
  2. To demand or ask for the presence of:
  3. To demand or ask for a meeting of; convene or convoke:

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• beeper

  1. One that beeps.
  2. A pager that beeps or vibrates to alert the person carrying it that someone is trying to make contact by telephone.

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  1. One that beeps.
  2. A pager that beeps or vibrates to alert the person carrying it that someone is trying to make contact by telephone.

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• buzzer

  1. An electric signaling device, such as a doorbell, that makes a buzzing sound.

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  1. An electric signaling device, such as a doorbell, that makes a buzzing sound.

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• tocsin

  1. An alarm sounded on a bell.
  2. A bell used to sound an alarm.
  3. A warning; an omen.

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  1. An alarm sounded on a bell.
  2. A bell used to sound an alarm.
  3. A warning; an omen.

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• signal

  1. An indicator, such as a gesture or colored light, that serves as a means of communication.
  2. A message communicated by such means.
  3. Something that incites action:

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  1. An indicator, such as a gesture or colored light, that serves as a means of communication.
  2. A message communicated by such means.
  3. Something that incites action:

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• horn

  1. One of the hard, usually permanent structures projecting from the head of certain mammals, such as cattle, sheep, goats, or antelopes, consisting of a bony core covered with a sheath of keratinous material.
  2. A hard protuberance, such as an antler or projection on the head of a giraffe or rhinoceros, that is similar to or suggestive of a horn.
  3. The hard smooth keratinous material forming the outer covering of the horns of cattle or related animals.

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  1. One of the hard, usually permanent structures projecting from the head of certain mammals, such as cattle, sheep, goats, or antelopes, consisting of a bony core covered with a sheath of keratinous material.
  2. A hard protuberance, such as an antler or projection on the head of a giraffe or rhinoceros, that is similar to or suggestive of a horn.
  3. The hard smooth keratinous material forming the outer covering of the horns of cattle or related animals.

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• siren

  1. A device in which compressed air or steam is driven against a rotating perforated disk to create a loud, often wailing sound as a signal or warning.
  2. An electronic device producing a similar sound as a signal or warning:
  3. Any of several slender aquatic salamanders of the family Sirenidae of eastern North America, having external gills, small forelimbs, and no hind limbs.

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  1. A device in which compressed air or steam is driven against a rotating perforated disk to create a loud, often wailing sound as a signal or warning.
  2. An electronic device producing a similar sound as a signal or warning:
  3. Any of several slender aquatic salamanders of the family Sirenidae of eastern North America, having external gills, small forelimbs, and no hind limbs.

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• bell

  1. A hollow metal musical instrument, usually cup-shaped with a flared opening, that emits a metallic tone when struck.
  2. The round, flared opening of a wind instrument at the opposite end from the mouthpiece.
  3. A percussion instrument consisting of metal tubes or bars that emit tones when struck.

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  1. A hollow metal musical instrument, usually cup-shaped with a flared opening, that emits a metallic tone when struck.
  2. The round, flared opening of a wind instrument at the opposite end from the mouthpiece.
  3. A percussion instrument consisting of metal tubes or bars that emit tones when struck.

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Apprehension of danger

• trepidation

  1. A state of alarm or dread; apprehension.
  2. An involuntary trembling or quivering.

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  1. A state of alarm or dread; apprehension.
  2. An involuntary trembling or quivering.

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• fright

  1. Sudden intense fear, as of something immediately threatening.
  2. Something extremely unsightly, alarming, or strange:
  3. To frighten.

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  1. Sudden intense fear, as of something immediately threatening.
  2. Something extremely unsightly, alarming, or strange:
  3. To frighten.

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• dread

  1. To be in terror of; fear intensely:
  2. To anticipate with alarm, distaste, or reluctance:
  3. To hold in awe or reverence.

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  1. To be in terror of; fear intensely:
  2. To anticipate with alarm, distaste, or reluctance:
  3. To hold in awe or reverence.

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• fear

  1. A very unpleasant or disturbing feeling caused by the presence or imminence of danger:
  2. A state or condition marked by this feeling:
  3. A feeling of disquiet or apprehension:

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  1. A very unpleasant or disturbing feeling caused by the presence or imminence of danger:
  2. A state or condition marked by this feeling:
  3. A feeling of disquiet or apprehension:

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A warning

• caution

  1. Careful forethought to avoid danger or harm.
  2. Close attention or vigilance to minimize risk:
  3. Prudence or restraint in action or decision:

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  1. Careful forethought to avoid danger or harm.
  2. Close attention or vigilance to minimize risk:
  3. Prudence or restraint in action or decision:

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• notification

  1. The act or an instance of notifying.
  2. Something, such as a letter, by which notice is given.

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  1. The act or an instance of notifying.
  2. Something, such as a letter, by which notice is given.

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• alert

  1. Vigilantly attentive; watchful:
  2. Mentally responsive and perceptive; quick.
  3. Brisk or lively in action:

  • Go to "alert" definitions

  1. Vigilantly attentive; watchful:
  2. Mentally responsive and perceptive; quick.
  3. Brisk or lively in action:

  • Go to "alert" definitions