Irrational synonyms

28 synonyms for irrational such as barmy, absurd, and arbitrary. Irrational is an adjective, and its antonyms are rational and logical.

Another word for irrational

Absurd, arbitrary, backasswards, barmy, baseless, crazy, daft, foolish, groundless, idiotic, illogical, implausible, laughable, ludicrous, mad, nonsensical, ridiculous, senseless, silly, stupid, unfounded, unjustifiable, unreasonable, unscientific, unsound, untenable, and wild.

Similar to irrational