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Poisonous synonyms

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Involving or filled with danger; perilous.
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  1. Involving or filled with danger; perilous.
  2. Being able or likely to do harm.
  3. Full of danger; likely to cause injury, pain, etc.; unsafe; perilous
Harmful to the mind or morals; corrupting:
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  1. Harmful to the mind or morals; corrupting:
  2. Morally injurious; corrupting; unwholesome
  3. Harmful to living things; injurious to health:
Damaging or harmful:
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  1. Damaging or harmful:
  2. Causing pain or suffering, especially of a psychological nature.
  3. Causing hurt; specif., wounding the feelings
Bringing or carrying disease
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  1. Bringing or carrying disease
  2. (Informal) Annoying; mischievous; bothersome
  3. Morally evil or deadly; pernicious.
Causing harm, ruin, or death; harmful.
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  1. Causing harm, ruin, or death; harmful.
  2. Portending harm; ominous.
Causing or likely to cause death
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  1. Causing or likely to cause death
  2. Wishing evil; very malevolent or malicious
  3. Very harmful, dangerous, or virulent
Capable of producing infection; infectious.
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  1. Capable of producing infection; infectious.
  2. Likely to cause infection; infectious
(Zool.) Having a poison gland or glands and able to inflict a poisonous wound by biting or stinging
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  1. (Zool.) Having a poison gland or glands and able to inflict a poisonous wound by biting or stinging
  2. Harmful or destructive:
  3. Full of or containing venom:
(Med.) Violent and rapid in its course; highly malignant
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  1. (Med.) Violent and rapid in its course; highly malignant
  2. Characterized by, causing, or promoting the rapid onset of severe illness. Used of a disease or toxin.
  3. Able to overcome the natural defenses of the host; highly infectious
Sinful; guilty.
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  1. Sinful; guilty.
  2. (Rare) Diseased or causing disease
  3. Breaking or disregarding a rule or practice; faulty
Severe, powerful, or intense; fierce:
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  1. Severe, powerful, or intense; fierce:
  2. Disposed to violent or destructive behavior:
  3. Having bad or harmful habits; unruly
(Obs.) Changed from a sound condition to an unsound one; spoiled; contaminated; rotten
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  1. (Obs.) Changed from a sound condition to an unsound one; spoiled; contaminated; rotten
  2. Morally unsound or debased; perverted; evil; depraved
  3. Containing errors or alterations, especially ones that prevent proper understanding or use:
Harmful to health or well-being; injurious
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  1. Harmful to health or well-being; injurious
  2. Having a harmful effect; injurious:
  3. Harmful often in a subtle or unexpected way (as for example deleterious effects, deleterious to health).
Offensive to the point of arousing disgust; foul:
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  1. Offensive to the point of arousing disgust; foul:
  2. Harmful or dangerous:
  3. Having a bad odor; foul-smelling
Of, relating to, or caused by disease; pathological or diseased:
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  1. Of, relating to, or caused by disease; pathological or diseased:
  2. Psychologically unhealthy or unwholesome:
  3. Given to or characterized by unwholesome thoughts or feelings, especially of death or disease:
Causing or leading to disease
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  1. Causing or leading to disease
Important in its outcome; fateful; decisive
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  1. Important in its outcome; fateful; decisive
  2. Concerned with or determining fate
  3. Deadly, causing actual or metaphorical death; causing the undoing of a claim, assertion, or legal document (“a fatal flaw in the pleading”). See also fatal defect. Deadly, causing actual or metaphorical death; causing the undoing of a claim, assertion, or legal document (“a fatal flaw in the pleading”). See also fatal defect.
Like or constituting a pestilence; widespread and deadly
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  1. Like or constituting a pestilence; widespread and deadly
  2. Of, causing, or likely to cause pestilence or infection
  3. Pernicious; dangerous; harmful
Reeking, oppressing, having the nature of a miasma
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  1. Reeking, oppressing, having the nature of a miasma
Capable of causing injury or death, especially by chemical means; poisonous:
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  1. Capable of causing injury or death, especially by chemical means; poisonous:
  2. Extremely risky or harmful, as a debt for which the borrower is in default and the collateral has lost so much value that its sale cannot cover the amount of the loan.
  3. Relating to or caused by a toxin or other poison:
Tending to take away vitality, effectiveness, or force:
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  1. Tending to take away vitality, effectiveness, or force:
  2. Extremely accurate; unerring:
  3. Aiming or wanting to kill; implacable:
Causing or producing destruction; destroying
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  1. Causing or producing destruction; destroying
  2. Merely negative; not helpful
  3. Tending or likely to cause destruction
Vulgar or obscene:
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  1. Vulgar or obscene:
  2. Full of or exhibiting faults or errors:
  3. Being in poor condition; diseased:
Bad-smelling
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  1. Bad-smelling
  2. Of or caused by mephitis
  3. Poisonous; noxious
Alternative form of mephitic.
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Poisonous or poisoned
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  1. Poisonous or poisoned
Of, affected by, or caused by a toxin, or poison
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  1. Of, affected by, or caused by a toxin, or poison
  2. Relating to or caused by a toxin or other poison:
  3. Acting as a poison; poisonous
Capable of causing damage by poisoning
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  1. Capable of causing damage by poisoning
  2. Poisonous; toxic.
Full of or containing venom:
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  1. Full of or containing venom:
  2. Secreting and transmitting venom:
  3. Harmful or destructive:
Able to overcome the natural defenses of the host; highly infectious
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  1. Able to overcome the natural defenses of the host; highly infectious
  2. Extremely poisonous or injurious; deadly
  3. Characterized by, causing, or promoting the rapid onset of severe illness. Used of a disease or toxin.
Marked by anger or sullenness:
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  1. Marked by anger or sullenness:
  2. Being of the color black, producing or reflecting comparatively little light and having no predominant hue.
  3. Evil; wicked:
(Archaic) Spiteful; malicious
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  1. (Archaic) Spiteful; malicious
  2. Expressing malice or contemptuous hate.
  3. Full of despite.
Angry, irritable, disagreeable, etc.
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  1. Angry, irritable, disagreeable, etc.
  2. Morally bad or wrong; wicked:
  3. Characterized by or indicating future misfortune; ominous:
Full of hatred.
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  1. Full of hatred.
  2. (Archaic) Feeling or showing hate; malicious; malevolent
  3. Nasty, unpleasant, objectionable, etc.
Having a harmful influence:
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  1. Having a harmful influence:
  2. Wishing evil or harm to others; having or showing ill will; malicious
(Law) Done with malice.
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  1. (Law) Done with malice.
  2. Having, showing, or caused by malice; spiteful; intentionally mischievous or harmful
  3. Having the nature of or resulting from malice; deliberately harmful; spiteful:
Showing ill will; malicious
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  1. Showing ill will; malicious
  2. Intending or threatening harm or ill will; malevolent:
  3. Evil or harmful in nature or effect:
Wishing evil; very malevolent or malicious
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  1. Wishing evil; very malevolent or malicious
  2. Having or showing ill will; malicious:
  3. Relating to cancer cells that are invasive and tend to metastasize. Malignant tumor cells are histologically more primitive than normal tissue.
Expressing spite or malice:
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  1. Expressing spite or malice:
  2. (Slang) Hard to cope with; difficult or troublesome:
  3. Ignoble; base:
Exasperatingly difficult to solve or handle:
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  1. Exasperatingly difficult to solve or handle:
  2. Very dangerous, troublesome, grievous, etc.
  3. Mean; malicious; ill-humored
Filled with, prompted by, or showing spite; malicious.
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  1. Filled with, prompted by, or showing spite; malicious.
  2. Full of or showing spite; purposefully annoying; malicious
(Zool.) Having a poison gland or glands and able to inflict a poisonous wound by biting or stinging
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  1. (Zool.) Having a poison gland or glands and able to inflict a poisonous wound by biting or stinging
  2. Secreting and transmitting venom:
  3. Full of or containing venom:
Faulty or defective:
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  1. Faulty or defective:
  2. Having bad or harmful habits; unruly
  3. Malicious; spiteful; mean
Severe and distressing:
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  1. Severe and distressing:
  2. (Slang) Strikingly good, effective, or skillful:
  3. Morally bad or wrong; acting or done with evil intent; depraved
Bad-tempered or malicious
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  1. Bad-tempered or malicious
  2. In a bad mood; irritable or cranky.
  3. Mean, spiteful, or overbearing.
Find another word for poisonous. In this page you can discover 53 synonyms, antonyms, idiomatic expressions, and related words for poisonous, like: dangerous, noxious, hurtful, pestiferous, baneful, malignant, infective, venomous, virulent, peccant and vicious.