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English definition of “irrational”

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irrational

adjective uk   /ɪˈræʃ.ən.əl/ us  
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.
irrationally
adverb uk   /-i/ us  
People often behave irrationally when they are under stress.
irrationality
noun [U] uk   /ɪˌræʃ.ənˈæl.ə.ti/ us    /-t̬i/
Translations of “irrational”
in Spanish irracional, absurd…
in Chinese (Traditional) 不理智的,沒有理性的…
in Russian нерациональный…
in Turkish mantıksız, saçma, akla dayanmayan…
in Chinese (Simplified) 不理智的,没有理性的…
in Polish irracjonalny…
(Definition of irrational from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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