irrational definition, meaning - what is irrational in the British English Dictionary & Thesaurus - Cambridge Dictionaries Online

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English definition of “irrational”

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irrational

adjective uk   us   /ɪˈræʃ.ən.əl/
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   us   /-i/
People often behave irrationally when they are under stress.
irrationality
noun [U] uk   /ɪˌræʃ.ənˈæl.ə.ti/  us   /-t̬i/
Translations of “irrational”
in Vietnamese phi lý…
in Spanish irracional, absurd…
in Thai ไม่มีเหตุผล…
in Malaysian tidak rasional…
in Chinese (Traditional) 不理智的,沒有理性的…
in Indonesian irasional, tidak logis…
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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