irrational

11 plus vocabulary word for grammar school entrance exams

Difficulty: Medium

Learn the meaning of irrational with synonyms, antonyms and an example sentence. Part of our 11 plus vocabulary list used for selective school and grammar school preparation.

irrational

(adjective)

Meaning

not based on reason or logic

Example

"Her decision to jump into the river was quite irrational, given the strong current."

Synonyms

illogicalunreasonableabsurd

Antonyms

reasonablelogical

More about this word

Word origin
From Latin 'irrationalis', meaning lacking reason.
Related word forms
  • noun: irrationality

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