Barmy, absurd, and arbitrary are all synonyms for irrational. Rational and logical are these antonyms of irrational. And here are another 28 synonyms for irrational.
Irrational Synonyms
- Absurd
- Arbitrary
- Barmy
- Baseless
- Crazy
- Daft
- Foolish
- Groundless
- Idiotic
- Illogical
- Implausible
- Laughable
- Ludicrous
- Mad
- Nonsensical
- Ridiculous
- Senseless
- Silly
- Stupid
- Unfounded
- Unjustifiable
- Unreasonable
- Unscientific
- Unsound
- Untenable
- Wild
- Backasswards