What are some alternative words for irrational?

Synonyms for irrational
ɪˈræʃ ə nl

This thesaurus page is about all possible synonyms, equivalent, same meaning and similar words for the term irrational.

Princeton's WordNet

  1. irrational number, irrational(adj)

    a real number that cannot be expressed as a rational number

    irrational number

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

  2. irrational(adj)

    not consistent with or using reason

    "irrational fears"; "irrational animals"

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

  3. irrational(adj)

    real but not expressible as the quotient of two integers

    "irrational numbers"

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


  1. irrational(adjective)


English Synonyms and Antonyms

  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.

    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

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

Dictionary of English Synonymes

  1. irrational(a.)

    brutish, brute, void of reason, without reason

  2. irrational(a.)

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

PPDB, the paraphrase database

  1. List of paraphrases:

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

How to pronounce irrational?

US English

How to say irrational in sign language?

  1. irrational

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How to use irrational in a sentence?

  1. Mariana Fulger:

    Life without a taste of irrational, of crazy, is a boring book.

  2. George Jean Nathan:

    Great art is as irrational as great music. It is mad with its own loveliness.

  3. Frank Haun:

    You can't say: The German army is not buying anything, you're not allowed to export anything, but you have to keep jobs here. It's irrational.

  4. Chen Long:

    It's irrational to expect that changing the chairman would have an impact on the market, the institution needs to be changed, not the chairman.

  5. David Cockfield:

    The psychology is extremely negative. We're back into panic mode, the market in Canada is becoming more and more irrational.

Translations for irrational

From our Multilingual Translation Dictionary

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  1. irrational

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