12
mad
12
outrageous(adjective, gentle, mild)
11
crazy(adjective, strange, fantastic, unrealistic)
9
silly(adjective, foolish, absurd, giddy)
9
wild
8
senseless(adjective, silly, foolish, unsound, meaningless)
8
paranoid
7
goofy
6
foolish(adjective, sound, wise, unsound, nonsensical)
6
insane(adjective, sound)
4
visceral
4
fatuous(adjective, stupid)
3
daydreamer
3
preposterous(adjective, ridiculous, bizarre)
3
self-destructive
2
capricious(adjective, reasonable, predictable, given)
2
insensible
2
unrealistic(adjective, foolish, practical, unsound, believable)
2
unreasonable(adjective, correct, right, foolish, unsound)
2
frivolous(adjective, silly, trivial)
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APASmart Define. (2016). sensible thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/sensible/thesaurus/antonyms
ChicagoSmart Define. 2016. "sensible thesaurus" https://smartdefine.org/sensible/thesaurus/antonyms (accessed September 20, 2026).
HarvardSmart Define 2016, sensible thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/sensible/thesaurus/antonyms>.
MLASmart Define. "sensible thesaurus" 29 March 2016. Web. 20 September 2026. <https://smartdefine.org/sensible/thesaurus/antonyms>