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Weaken synonyms

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To make less; to diminish; to reduce.
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  1. To make less; to diminish; to reduce.
  2. (Archaic) To belittle; minimize; disparage
  3. (Intransitive) To become less.
To cause to go astray, become bewildered, etc.
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  1. To cause to go astray, become bewildered, etc.
  2. To cause the loss of
  3. To suffer loss:
To become or cause to become less, smaller, etc.; diminish
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  1. To become or cause to become less, smaller, etc.; diminish
To recur. Used of an illness.
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  1. To recur. Used of an illness.
  2. To slip or fall back into a former condition, esp. after improvement or seeming improvement
  3. To become sicker after partial recovery from an illness.
To weaken the resistance or opposition of (someone)
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  1. To weaken the resistance or opposition of (someone)
  2. To become soft or softer.
  3. To undermine or reduce the strength, morale, or resistance of.
To release from intense concentration, hard work, worry, etc.; give rest to
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  1. To release from intense concentration, hard work, worry, etc.; give rest to
  2. To rest from effort, worry, or work, as by lying down, engaging in recreation, etc.
  3. To become lax or loose.
To allow to droop or sink.
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  1. To allow to droop or sink.
  2. To lose vitality or strength; become weakened; languish
  3. (Intransitive) To lose all enthusiasm or happiness.
To get a grade of failure in (a subject)
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  1. To get a grade of failure in (a subject)
  2. To lose power or strength; weaken; die away
  3. To break; not to succeed in reaching a standard or goal; to perform ineptly or faultily; to become bankrupt. To break; not to succeed in reaching a standard or goal; to perform ineptly or faultily; to become bankrupt.
To approach an end:
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  1. To approach an end:
  2. To decrease gradually in size, number, strength, or intensity:
  3. To become less intense, bright, strong, etc.; grow dim or faint, as a light
To fall to pieces; disintegrate
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  1. To fall to pieces; disintegrate
  2. To break into small fragments or pieces:
  3. To give way; collapse:
To walk lamely or move in an irregular fashion.
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  1. To walk lamely or move in an irregular fashion.
  2. (Intransitive) To stop marching.
  3. To bring to a stop.
To walk with or as with a lame or partially disabled leg or foot
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  1. To walk with or as with a lame or partially disabled leg or foot
  2. To walk lamely, especially with irregularity, as if favoring one leg.
  3. To move or proceed unevenly, jerkily, or laboriously, as because of being impaired, defective, damaged, etc.
To lose vigor or vitality; fail in health; become weak; droop
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  1. To lose vigor or vitality; fail in health; become weak; droop
  2. To lose intensity, impetus, enthusiastic support, etc.
  3. To be or become weak or feeble; lose strength or vigor:
To lose braking power
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  1. To lose braking power
  2. To cause to lose brightness, freshness, or strength:
  3. To lose freshness or strength; wither; wane
To cause to slope or bend downward.
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  1. To cause to slope or bend downward.
  2. To draw to a gradual close:
  3. To refuse politely:
To reduce in amount, degree, or intensity; lessen:
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  1. To reduce in amount, degree, or intensity; lessen:
  2. (Law) To become void.
  3. To become less in amount, degree, force, etc.; diminish
To walk unsteadily or feebly; stagger.
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  1. To walk unsteadily or feebly; stagger.
  2. To be on the point of failure or collapse
  3. To rock or shake as if about to fall; be unsteady
To quiver, quake, totter, vibrate, etc.
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  1. To quiver, quake, totter, vibrate, etc.
  2. To feel great fear or anxiety
  3. To feel fear or anxiety:
To signal with or as with a flag; esp., to signal (the driver of a vehicle) to stop
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  1. To signal with or as with a flag; esp., to signal (the driver of a vehicle) to stop
  2. To lose strength; grow weak or tired
  3. To lose vigor or strength; weaken or diminish:
To fall into a usually brief state of unconsciousness.
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  1. To fall into a usually brief state of unconsciousness.
  2. To fall into a faint; swoon
  3. To lose courage or hope
To cause to droop or lose freshness:
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  1. To cause to droop or lose freshness:
  2. To become weak or faint; lose strength; languish
  3. To lose courage; quail
(Idiomatic) To cancel due to bad weather.
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  1. (Idiomatic) To cancel due to bad weather.
  2. To remove something by washing.
  3. (Idiomatic) To lose traction while going around a turn, especially in cycling, motorsports and skiing/snowboarding.
To bring to a specified undesirable state, as of weakness or helplessness:
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  1. To bring to a specified undesirable state, as of weakness or helplessness:
  2. To thin (paint, lacquer, etc.), as with turpentine
  3. To remove oxygen from a compound.
To represent as having the least degree of importance, value, or size:
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  1. To represent as having the least degree of importance, value, or size:
  2. To estimate or make appear to be of the least possible amount, value, or importance
  3. To reduce to a minimum; decrease to the least possible amount, degree, etc.
To remove a nerve or part of a nerve.
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  1. To remove a nerve or part of a nerve.
  2. To weaken or destroy the strength or vitality of:
  3. To deprive of strength, force, vigor, etc.; weaken physically, mentally, or morally; devitalize; debilitate
To make weak or feeble; enervate
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  1. To make weak or feeble; enervate
  2. To sap the strength or energy of; enervate.
To use up completely:
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  1. To use up completely:
  2. To let out the contents of (a container); cause or allow to escape:
  3. To discuss or treat completely; cover thoroughly:
To disable, damage, or impair the functioning of:
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  1. To disable, damage, or impair the functioning of:
  2. To make unable or unfit to act, function effectively, etc.; disable
  3. To cause to lose the use of a limb or limbs.
To deprive of men or personnel
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  1. To deprive of men or personnel
  2. To deprive of manly courage, nerve, self-confidence, etc.
  3. To take away characteristics traditionally associated with masculinity, such as courage or strength:
To deprive of strength or vigor; weaken.
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  1. To deprive of strength or vigor; weaken.
  2. To deprive (a male) of the power to reproduce, as by removing the testicles; castrate; geld
  3. To destroy the strength or force of; weaken
To remove the ovaries of (a female); spay.
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  1. To remove the ovaries of (a female); spay.
  2. To deprive of essential virility, vigor, or significance by mutilating, expurgating, subjugating, etc.; emasculate
  3. To remove the testicles of; emasculate; geld
To make listless or ineffective; lower the vitality of; weaken
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  1. To make listless or ineffective; lower the vitality of; weaken
  2. To diminish or destroy the strength or vitality of.
To dig beneath; excavate ground from under, so as to form a tunnel or mine
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  1. To dig beneath; excavate ground from under, so as to form a tunnel or mine
  2. To injure, weaken, or impair, esp. by subtle, stealthy, or insidious means
  3. To weaken by wearing away a base or foundation:
Of property or a contractual right, to interfere in such a way as to diminish its value. Of property or a contractual right, to interfere in such a way as to diminish its value.
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  1. Of property or a contractual right, to interfere in such a way as to diminish its value. Of property or a contractual right, to interfere in such a way as to diminish its value.
  2. To make worse, less, weaker, etc.; reduce an ability or function
  3. To cause to weaken, be damaged, or diminish, as in quality:
To drain (a tree, for example) of sap.
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  1. To drain (a tree, for example) of sap.
  2. To deplete or weaken gradually:
  3. The watery fluid that circulates through a plant that has vascular tissues. Sap moving up the xylem carries water and minerals, while sap moving down the phloem carries water and food.
To deprive of strength; make feeble.
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  1. To deprive of strength; make feeble.
To deprive of nerve, force, or strength; to weaken; to enfeeble.
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  1. To deprive of nerve, force, or strength; to weaken; to enfeeble.
  2. To make feel weak, nervous, etc.
  3. To cause to lose courage or firmness of purpose:
To make unable or unfit; esp., to make incapable of normal activity; disable
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  1. To make unable or unfit; esp., to make incapable of normal activity; disable
  2. To deprive of strength or ability; disable.
To deprive of richness or strength:
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  1. To deprive of richness or strength:
  2. To reduce to poverty; make poor.
  3. To deprive of strength, resources, etc.
To make or become thin or thinner, as in dimension, density, etc.
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  1. To make or become thin or thinner, as in dimension, density, etc.
  2. In a thin manner:
  3. So as to be thin:
To make thinner or less concentrated by adding a liquid such as water.
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  1. To make thinner or less concentrated by adding a liquid such as water.
  2. To become diluted
  3. To thin down or weaken as by mixing with water or other liquid
To cause to bend or slope downward or aside
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  1. To cause to bend or slope downward or aside
  2. To bend, turn, or slope downward or aside
  3. To draw to a gradual close:
To lose former normal or higher qualities
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  1. To lose former normal or higher qualities
  2. To fall below a normal or desirable state, especially functionally or morally; deteriorate:
  3. To decline or become debased morally, culturally, etc.
To make or become worse; lower in quality or value; depreciate
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  1. To make or become worse; lower in quality or value; depreciate
  2. To grow worse; degenerate:
  3. To diminish or impair in quality, character, or value:
(Sports) To swerve from a straight course, especially in the direction of a slice.
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  1. (Sports) To swerve from a straight course, especially in the direction of a slice.
  2. To become less distinct; lose color, brilliance, etc.
  3. (Football) To move back from the line of scrimmage. Used of a quarterback.
To give such a grade of failure to (a student):
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  1. To give such a grade of failure to (a student):
  2. To receive an academic grade below the acceptable minimum in (a course, for example):
  3. To break; not to succeed in reaching a standard or goal; to perform ineptly or faultily; to become bankrupt. To break; not to succeed in reaching a standard or goal; to perform ineptly or faultily; to become bankrupt.
To become limp; droop
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  1. To become limp; droop
  2. To hang loose without stiffness; to bend down, as flexible bodies; to be loose, yielding, limp.
  3. To signal with or as with a flag; esp., to signal (the driver of a vehicle) to stop
To exist or continue in miserable or disheartening conditions:
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  1. To exist or continue in miserable or disheartening conditions:
  2. To become downcast or pine away in longing:
  3. To be or become weak or feeble; lose strength or vigor:
To cause to submerge or go beneath the surface
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  1. To cause to submerge or go beneath the surface
  2. To invest or spend, often without getting a return or adequate value:
  3. To fall or drop to a lower level, especially to go down slowly or in stages:
To approach an end:
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  1. To approach an end:
  2. To decrease gradually in size, number, strength, or intensity:
  3. To become less intense, bright, strong, etc.; grow dim or faint, as a light
To be used up or worn down gradually; become smaller or fewer by gradual loss
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  1. To be used up or worn down gradually; become smaller or fewer by gradual loss
  2. To pass without being put to use:
  3. To fail to take advantage of or use for profit; lose:
To reduce in force, value, amount, or degree; weaken:
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  1. To reduce in force, value, amount, or degree; weaken:
  2. (Electronics) To reduce (the amplitude of an electrical signal) with little or no distortion.
  3. To become thin, weak, or fine.
To make weak or feeble; enervate
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  1. To make weak or feeble; enervate
  2. To sap the strength or energy of; enervate.
To make listless or ineffective; lower the vitality of; weaken
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  1. To make listless or ineffective; lower the vitality of; weaken
  2. To diminish or destroy the strength or vitality of.
To remove a nerve or part of a nerve.
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  1. To remove a nerve or part of a nerve.
  2. To weaken or destroy the strength or vitality of:
  3. To deprive of strength, force, vigor, etc.; weaken physically, mentally, or morally; devitalize; debilitate
To deprive of strength; make feeble.
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  1. To deprive of strength; make feeble.
To drain (a tree, for example) of sap.
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  1. To drain (a tree, for example) of sap.
  2. To drain of sap
  3. To dig a sap.
(Figuratively) To weaken or work against; to hinder, sabotage. [from 15th c.]
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  1. (Figuratively) To weaken or work against; to hinder, sabotage. [from 15th c.]
  2. To weaken by wearing away a base or foundation:
  3. To injure, weaken, or impair, esp. by subtle, stealthy, or insidious means
To cause the ruin or downfall of; destroy.
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  1. To cause the ruin or downfall of; destroy.
  2. (Obs.) To interpret; explain
  3. To untie, disassemble, or loosen:
To make feel weak, nervous, etc.
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  1. To make feel weak, nervous, etc.
  2. To cause to lose courage or firmness of purpose:
  3. To deprive of nerve, force, or strength; to weaken; to enfeeble.
(Electronics) To reduce (the amplitude of an electrical signal) with little or no distortion.
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  1. (Electronics) To reduce (the amplitude of an electrical signal) with little or no distortion.
  2. To reduce in force, value, amount, or degree; weaken:
  3. To become thin, weak, or fine.
To dissolve or break up the fat globules of
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  1. To dissolve or break up the fat globules of
  2. To form by penetrating, probing, or digging:
  3. To lessen the strength of; dilute:
To lessen the force, strength, purity, or brilliance of, especially by admixture.
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  1. To lessen the force, strength, purity, or brilliance of, especially by admixture.
  2. To make thinner or less concentrated by adding a liquid such as water.
  3. To thin down or weaken as by mixing with water or other liquid
In a thin manner:
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  1. In a thin manner:
  2. In a thin way
  3. So as to be thin:
To give a sheen to the surface of (fabric or metal).
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  1. To give a sheen to the surface of (fabric or metal).
  2. To take on a supply of water, as a ship.
  3. To dilute by adding water to
To reduce pressure; to become less serious
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(Obs.) To melt
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  1. (Obs.) To melt
  2. To become more lenient, compassionate, or forgiving.
  3. To become less severe or intense; slacken:
To become less active, intense, brisk, etc.
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  1. To become less active, intense, brisk, etc.
  2. To become less tense; loosen, as rope
  3. (Intransitive) To gradually decrease in intensity or tautness; to become slack.
To undermine or reduce the strength, morale, or resistance of.
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  1. To undermine or reduce the strength, morale, or resistance of.
  2. To make less harsh, strident, or critical:
  3. To become soft or softer.
To produce a return for effort or investment:
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  1. To produce a return for effort or investment:
  2. To produce or bear
  3. To produce

Synonym Study

  • Undermine and sap both suggest a weakening or impairing by subtle or stealthy means authority undermined by rumors, strength sapped by disease
  • Enervate implies a lessening of force, vigor, energy, etc., as through indulgence in luxury enervated by idleness
  • Debilitate suggests a partial or temporary gradual weakening, as by disease or dissipation debilitated by alcoholic excesses
  • Weaken , the most general of these words, implies a lessening of strength, power, soundness, etc. weakened by disease, to weaken an argument
Find another word for weaken. In this page you can discover 94 synonyms, antonyms, idiomatic expressions, and related words for weaken, like: lessen, lose, decrease, relapse, soften, relax, droop, fail, wane, crumble and halt.