Synonyms|330Antonyms|21|Broader|0Narrower|0Related|642

37 entries under idiom topic. ×

6
of unsound mind(expression, adjective, silly, mad)
4
non compos mentis(expression, adjective, law, sane)
3
mad as a hatter(expression, adjective, silly, mad)
3
mentally ill(expression, adjective, insane, sane)
3
not all there(expression, adjective, insane, sane)
2
around the bend(adjective, insane, sane)
2
bats in the belfry(expression, silly, foolish, mad)
2
bereft of reason(expression, insanity)
2
mad as a March hare(expression, silly, foolish, mad)
2
not right(expression, insanity)
2
nutty as fruitcake(expression, silly, foolish, mad)
2
off one's rocker(adjective, insane, sane)
2
out of one's mind(adjective, insane, sane)
2
out to lunch(expression, silly, mad, insane)
2
round the bend(expression, silly, foolish, mad)
1
crazy as a loon(adjective, insane, sane)
1
deprived of reason
1
nutty as a fruitcake(adjective, insane, sane)
1
sick in the head(adjective, insane, sane)
1
stark raving mad(adjective, insane, sane)
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ChicagoSmart Define. 2015. "moonstruck thesaurus" https://smartdefine.org/moonstruck/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2015, moonstruck thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/moonstruck/thesaurus/synonyms>.
MLASmart Define. "moonstruck thesaurus" 10 April 2015. Web. 26 September 2026. <https://smartdefine.org/moonstruck/thesaurus/synonyms>