Irrational Meaning
/ɪˈɹæʃ.(ə.)nəl/Definition, CEFR level B2, pronunciation, examples, and quiz.
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Definition
adjNot rational; unfounded, nonsensical or wrong-headed.
adjOf a real number, that cannot be written as the ratio of two integers.
Sentence Examples
The irrational conversation continued.
Clava loves all things irrational, and works at the kindergarten for precisely that reason.
This teacher has an irrational hate against me.
Synonyms & Antonyms
Synonyms:
Antonyms:
CEFR Practice Quiz
His ____ fear of buttons made him avoid wearing any shirt with more than three.
CEFR Practice Quiz (Alternate)
The fear of spiders is often ____, as most spiders are completely harmless to healthy human beings.
Word Origin & History
From Latin irratiōnālis, from ir- + ratiōnālis.
Literary Quotations & Historical Citations
"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:
Explore More B2 Vocabulary Words
CEFR Practice Quiz
His ____ fear of buttons made him avoid wearing any shirt with more than three.
CEFR Practice Quiz (Alternate)
The fear of spiders is often ____, as most spiders are completely harmless to healthy human beings.