Synonyms for irrational
ɪˈræʃ ə nlir·ra·tional

WiktionaryRate these synonyms:0.0 / 0 votes

1. irrationaladjective

   Antonyms:
   rational

English Synonyms and AntonymsRate these synonyms:0.0 / 0 votes

1. irrational

   That is absurd which is contrary to the first principles of reasoning; as, that a part should be greater than the whole is absurd. A paradoxical statement appears at first thought contradictory or absurd, while it may be really true. Anything is irrational when clearly contrary to sound reason, foolish when contrary to practical good sense, silly when petty and contemptible in its folly, erroneous when containing error that vitiates the result, unreasonable when there seems a perverse bias or an intent to go wrong. Monstrous and preposterous refer to what is overwhelmingly absurd; as, "O monstrous! eleven buckram men grown out of two," Shakespeare 1 King Henry IV, act ii, sc. 4. The ridiculous or the nonsensical is worthy only to be laughed at. The lunatic's claim to be a king is ridiculous; the Mother Goose rimes are nonsensical. Compare INCONGRUOUS.

   Synonyms:
   absurd, anomalous, chimerical, erroneous, false, foolish, ill-advised, ill-considered, ill-judged, inconclusive, incorrect, infatuated, ludicrous, mistaken, monstrous, nonsensical, paradoxical, preposterous, ridiculous, senseless, stupid, unreasonable, wild

   Antonyms:
   certain, consistent, demonstrable, demonstrated, established, incontestable, incontrovertible, indisputable, indubitable, infallible, logical, rational, reasonable, sagacious, sensible, sound, substantial, true, undeniable, unquestionable, wise

Princeton's WordNetRate this synonym:0.0 / 0 votes

1. irrational number, irrationaladjective

   a real number that cannot be expressed as a rational number

   Synonyms:
   irrational number

   Antonyms:
   lucid, rational, intelligent, thinking(a), sane, demythologized, reasonable, demythologised, reasoning(a), logical, coherent

2. irrationaladjective

   not consistent with or using reason

   "irrational fears"; "irrational animals"

   Antonyms:
   rational, coherent, reasonable, thinking(a), lucid, demythologized, demythologised, sane, intelligent, logical, reasoning(a)

3. irrationaladjective

   real but not expressible as the quotient of two integers

   "irrational numbers"

   Antonyms:
   rational, sane, coherent, logical, lucid, reasonable, thinking(a), intelligent, demythologized, demythologised, reasoning(a)

Matched Categories

1. • Math

Dictionary of English SynonymesRate these synonyms:5.0 / 1 vote

1. irrationaladjective

   Synonyms:
   brutish, brute, void of reason, without reason

2. irrationaladjective

   Synonyms:
   absurd, unreasonable, preposterous, foolish, silly, unwise, injudicious, extravagant

PPDB, the paraphrase databaseRate these paraphrases:0.0 / 0 votes

1. List of paraphrases for "irrational":

   unreasonable, absurd, illogical, senseless, unreasonably, mindless, unsound

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How to use irrational in a sentence?

1. Jony Luna:

   We are not crazy, or irrational, as they call us. Our fathers fought when they couldn't even read and write, now it is our time to fight, to defend our people and the people of Bolivia.

2. Alphonso David:

   We are pleased The Court recognized this irrational rule for what The Court is : discrimination, plain and simple. LGBTQ Americans deserve the health care that they need without fear of mistreatment, harassment, or humiliation.

3. Guillermo Delgado:

   It is a victory for Cuba because it was achieved without conceding basic principles, for Obama, I think it's a spectacular step. ... All countries should change this irrational policy.

4. Board Member Lawson-Muhammad:

   I had an irrational response to being stopped for a traffic violation. I allowed my emotions to overwhelm me that morning, and I fell short of the standards to which I hold Board Member Lawson-Muhammad.

5. Bob Corker:

   To browbeat somebody for just having a question or speak down to someone because they have a concern. To say that they're irrational or they don't understand who we are as a nation, or something like that. Yeah, it doesn't help. It hurts, what would help, and I think this was a universal message in the meeting we just had -- on both sides of the aisle, I might add -- is that someone needs to explain clearly to the American people the processes we go through before we admit refugees.