Synonyms|503Antonyms|100|Broader|13Narrower|17Related|1.6k

61 entries under expression topic. ×

12
non compos mentis(adjective, idiom, law, foolish)
11
of unsound mind(adjective, idiom, silly, mad)
8
mentally ill(adjective, idiom, mad, insane)
8
not all there(adjective, idiom, unstable, disturbed)
6
out to lunch(adjective, idiom, silly, mad)
3
insane person(noun, idiom, person, worrier)
3
off one's head(adjective, idiom, crazy, mad)
2
around the bend(adjective, idiom, wrong, confused)
2
bats in the belfry(idiom, silly, foolish, mad)
2
bereft of reason(idiom, insanity)
2
crazy person(noun, idiom, person)
2
flipped out(adjective, silly, crazy, mad)
2
freaked out(adjective, silly, crazy, mad)
2
mad as a March hare(idiom, silly, foolish, mad)
2
mad as a hatter(adjective, idiom, silly, foolish)
2
mentally deranged
2
mentally strange(silly, foolish, mad, insane)
2
non compos(unsound, worrier, nutter, valetudinary)
2
not right(idiom, insanity)
2
nutty as fruitcake(idiom, silly, foolish, mad)
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APASmart Define. (2015). lunatic thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/lunatic/thesaurus/synonyms
ChicagoSmart Define. 2015. "lunatic thesaurus" https://smartdefine.org/lunatic/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2015, lunatic thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/lunatic/thesaurus/synonyms>.
MLASmart Define. "lunatic thesaurus" 6 August 2015. Web. 21 September 2026. <https://smartdefine.org/lunatic/thesaurus/synonyms>