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Irrational synonyms

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Not governed by or based on reason:
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  1. Not governed by or based on reason:
  2. Having or showing little sense or judgment; not rational
  3. Not determined by reason; capricious; arbitrary; irrational.
Deceptively appealing:
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  1. Deceptively appealing:
  2. Having the ring of truth or plausibility but actually fallacious:
  3. Seeming to be good, sound, correct, logical, etc. without really being so; plausible but not genuine
Containing a fallacy; erroneous
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  1. Containing a fallacy; erroneous
  2. Tending to mislead; deceptive:
  3. Deceptive or misleading.
Not capable of being occupied or lived in:
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  1. Not capable of being occupied or lived in:
  2. That cannot be held, defended, or maintained
  3. (Usage Problem) Insupportable; intolerable.
(Informal) Unconscious, usually as a result of physical trauma.
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  1. (Informal) Unconscious, usually as a result of physical trauma.
  2. Having no real point or purpose; nonsensical; meaningless
  3. Not having or showing good sense; stupid; foolish
Having or showing little sense, judgment, or sobriety; foolish, stupid, absurd, ludicrous, irrational, etc.
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  1. Having or showing little sense, judgment, or sobriety; foolish, stupid, absurd, ludicrous, irrational, etc.
  2. Having or exhibiting a lack of good judgment or common sense; foolish.
  3. Semiconscious; dazed:
Deserving ridicule
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  1. Deserving ridicule
  2. Deserving or inspiring ridicule; absurd, preposterous, or silly.
Of, relating to, or manifesting the view that there is no order or meaning in human life or in the universe.
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  1. Of, relating to, or manifesting the view that there is no order or meaning in human life or in the universe.
  2. Impossible to take seriously; silly:
  3. Extremely unreasonable, incongruous, or inappropriate:
Not logical or reasonable; using, based on, or caused by faulty reasoning
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  1. Not logical or reasonable; using, based on, or caused by faulty reasoning
  2. Contrary to logic; lacking sense or sound reasoning.
  3. Without logic; senseless.
Having or showing little sense or judgment; not rational
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  1. Having or showing little sense or judgment; not rational
  2. Not governed by or based on reason:
  3. Not determined by reason; capricious; arbitrary; irrational.
  1. Not reasoned; irrational.
  2. Not based on or guided by reason; unreasonable:

Synonym Study

  • Unreasonable implies bad judgment, willfulness, prejudice, etc. as responsible for that which is not justified by reason unreasonable demands
  • Irrational implies mental unsoundness or may be used to stress the utterly illogical nature of that which is directly contrary to reason an irrational belief that everybody was his enemy
Find another word for irrational. In this page you can discover 16 synonyms, antonyms, idiomatic expressions, and related words for irrational, like: unreasonable, specious, fallacious, untenable, senseless, silly, ridiculous, absurd, illogical, wrong and stupid.