irrational
adjective /ɪˈræʃ.ən.əl/Definition
C2 not using reason or clear thinking: It's totally irrational, but I'm frightened of mice. His parents were worried by his increasingly irrational behaviour.Of unsound mindStupid and silly irrationally /-i/ adverb › People often behave irrationally when they are under stress.Of unsound mindStupid and silly irrationality /ɪˌræʃ.ənˈæl.ə.ti/
/-t̬i/ noun [U] Of unsound mindStupid and silly
/-t̬i/ noun [U] Of unsound mindStupid and silly (Definition of irrational adjective from the Cambridge Advanced Learner's Dictionary & Thesaurus
© Cambridge University Press)
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Synonyms and related words:
- (as) mad as a hatter/March hare idiom
- be (as) nutty as a fruitcake idiom
- be crazy about sb/sth idiom
- demented adjective
- deranged adjective
- disturbed adjective
- flaky adjective (PERSON)
- gaga adjective (MENTALLY UNCLEAR)
- have bats in the belfry idiom
- institutionalized adjective
- like a man/woman possessed idiom
- mad adjective (MENTALLY ILL)
- maniac noun (MENTALLY ILL)
- mixed up adjective
- off your rocker idiom
- off your trolley idiom
- psychopath noun
- take leave of your senses idiom
- unstable adjective
- wreck noun
Topic:
Of unsound mind
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throw caution to the wind/winds
to do something without worrying about the risk or negative results
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