irrational

Word parts

ir- + rational

Pronunciation

• enPR: ĭră'sh(ə)nəl, IPA ^(key): /ɪˈræʃ.(ə.)nəl/

• Audio (UK)

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Adjective

Positive irrational

Comparative more irrational

Superlative most irrational

1. If something is irrational is it not rational, or it is nonsensical.
   • Antonym: rational

   That decision was completely irrational.