irrational
EnglishEdit
EtymologyEdit
From Latin irratiōnālis, from ir- + ratiōnālis.
PronunciationEdit
AdjectiveEdit
irrational (comparative more irrational, superlative most irrational)
- Not rational; unfounded or nonsensical.
- an irrational decision
- July 18, 2012, Scott Tobias, AV Club The Dark Knight Rises[1]
- Where the Joker preys on our fears of random, irrational acts of terror, Bane has an all-consuming, dictatorial agenda that’s more stable and permanent, a New World Order that’s been planned out with the precision of a military coup.
- (mathematics, arithmetic, number theory, not comparable) Of a real number, that cannot be written as the ratio of two integers.
- The number π is irrational.
- Antonym: rational
- Hyponyms: transcendental, uncomputable
Derived termsEdit
CollocationsEdit
nouns
- irrational fear
- irrational belief
- irrational behavior
- irrational thought
- irrational thinking
- irrational urge
- irrational anger
- irrational jealousy
- irrational desire
- irrational hope
- irrational exuberance
- irrational feeling
- irrational person
- irrational system
adverbs
- completely irrational
- utterly irrational
- wholly irrational
- seemingly irrational
- totally irrational
- quite irrational
- too irrational
TranslationsEdit
unfounded or nonsensical
mathematics: of a number
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Translations to be checked
NounEdit
irrational (plural irrationals)
- A real number that can not be expressed as the quotient of two integers, an irrational number.
- 1946, Bertrand Russell, History of Western Philosophy, I.24:
- The square root of 2, which was the first irrational to be discovered, was known to the early Pythagoreans, and ingenious methods of approximating to its value were discovered.
- 1946, Bertrand Russell, History of Western Philosophy, I.24:
TranslationsEdit
irrational number
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Further readingEdit
- irrational at OneLook Dictionary Search
- “irrational”, in Merriam-Webster Online Dictionary
- “irrational”, in The American Heritage Dictionary of the English Language, 5th edition, Boston, Mass.: Houghton Mifflin Harcourt, 2016, →ISBN.
- “irrational”, in Collins English Dictionary.
- “irrational” (US) / “irrational” (UK) in Macmillan English Dictionary.
GermanEdit
Alternative formsEdit
PronunciationEdit
AdjectiveEdit
irrational (strong nominative masculine singular irrationaler, comparative irrationaler, superlative am irrationalsten)
DeclensionEdit
Positive forms of irrational
Comparative forms of irrational
Superlative forms of irrational