Synonyms|800Antonyms|164|Broader|38Narrower|54Related|2.2k

62 entries under idiom topic. ×

1
crazy as a loon(expression, adjective, crazy, confused)
1
deprived of reason
1
fit to be tied(expression, violent, fierce, unreasonable)
1
foaming at the mouth(expression, adjective, violent, vicious)
1
hot under the collar(expression, adjective, wild, mad)
1
in a stew(expression, adjective, wild, mad)
1
mentally deranged
1
off the wall(expression, adjective, simple, silly)
1
on the warpath(expression, violent, fierce, unreasonable)
1
out of all reason(expression, silly, foolish, fantastic)
1
out of control(expression, adjective, wild, mad)
1
stark raving mad(adjective, sane)
1
up in arms(expression, violent, fierce, unreasonable)
0
all possessed(expression, insanity)
0
be insane(expression, insanity)
0
become insane(expression, insanity)
0
disturbed person
0
flip one's bush(expression, insanity)
0
flip one's lid(expression, insanity)
0
flip one's wig(expression, insanity)
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APASmart Define. (2015). insane thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/insane/thesaurus/synonyms
ChicagoSmart Define. 2015. "insane thesaurus" https://smartdefine.org/insane/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2015, insane thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/insane/thesaurus/synonyms>.
MLASmart Define. "insane thesaurus" 10 April 2015. Web. 26 September 2026. <https://smartdefine.org/insane/thesaurus/synonyms>