Meaning of IRRATIONAL
| Pronunciation: | | i'rashunl
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 WordNet Dictionary |
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- [adj] not consistent with or using reason; "irrational fears"; "irrational animals"
- [adj] (math) real but not expressible as the quotient of two integers; "irrational numbers"
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| | Synonyms: | | blind, incoherent, jaundiced, nonrational, reasonless, superstitious, unreasoning, yellow |
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| | Antonyms: | | rational, rational | | |
| | See Also: | | illogical, unlogical, unreasonable | |
| Webster's 1913 Dictionary |
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| | Definition: | | \Ir*ra"tion*al\, a. [L. irrationalis: cf. F.
irrationnel. See {In-} not, and {Rational}.]
1. Not rational; void of reason or understanding; as, brutes
are irrational animals.
2. Not according to reason; absurd; foolish.
It seemed utterly irrational any longer to maintain
it. --I. Taylor.
3. (Math.) Not capable of being exactly expressed by an
integral number, or by a vulgar fraction; surd; -- said
especially of roots. See {Surd}.
Syn: Absurd; foolish; preposterous; unreasonable; senseless.
See {Absurd}.
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| Thesaurus Terms |
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| | Related Terms: | | abnormal, absonant, algorismic, algorithmic, aliquot, bereft of reason, bigoted, brainless, brainsick, cardinal, contradictory, contrary to reason, crackbrained, cracked, crazed, crazy, daft, decimal, deluded, demented, deprived of reason, deranged, differential, digital, disoriented, distraught, even, exponential, extravagant, extreme, extremist, fallacious, fanatic, faulty, figural, figurate, figurative, finite, flawed, flighty, foolish, fractional, haggard, hallucinated, headless, ignorant, ill-advised, ill-considered, ill-contrived, ill-devised, ill-gauged, ill-judged, illogical, imaginary, impair, impolitic, impossible, imprudent, inadvisable, inauthentic, inconclusive, incongruous, inconsequent, inconsequential, inconsiderate, inconsistent, indiscreet, inept, inexpedient, infinite, injudicious, inordinate, insane, insensate, integral, invalid, lackbrained, lean-minded, lean-witted, loco, logarithmic, logometric, loose, lunatic, mad, maddened, manic, mazed, mental, mentally deficient, meshuggah, mindless, misadvised, misguided, moon-struck, myopic, negative, non compos, non compos mentis, nonrational, nonscientific, not all there, not bright, not following, not right, numeral, numerary, numerative, numeric, odd, of little brain, of unsound mind, off, ordinal, overenthusiastic, overreligious, overzealous, pair, paralogical, pea-brained, perfervid, pin-brained, positive, possible, prime, psycho, queer, rabid, radical, rational, real, reasonless, reciprocal, reckless, self-annulling, self-contradictory, self-refuting, senseless, shortsighted, sick, slackminded, slackwitted, sophistic, stark-mad, stark-staring mad, strange, submultiple, surd, tetched, thoughtless, touched, transcendental, ultrazealous, unadvised, unauthentic, unbalanced, unconnected, unconsidered, undiscerning, unforeseeing, ungifted, unhinged, unintellectual, unintelligent, unphilosophical, unreasonable, unreasoning, unreflecting, unreflective, unsane, unscientific, unseeing, unsensible, unsettled, unsound, untalented, unthinking, unthoughtful, unwise, wandering, wild-eyed, wild-looking, without reason, witless, zealotic |
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