2
jejune
2
ridiculous(adjective, stupid, funny)
2
absurd(adjective, senseless, ridiculous)
2
idiotic(adjective, reasonable, smart, foolish, unsound)
2
anesthetic
2
psycho
2
rash(adjective, reasonable)
2
unaware
2
uninhibited
2
unintelligent(adjective, foolish, unsound)
2
unsound(adjective, foolish)
2
wacky
2
whimsical(adjective, fanciful, playful)
1
imprudent(adjective, kind, prudent)
1
irrational(adjective, sound, foolish, rational, senseless)
1
numb
1
reckless
1
unwise(adjective, foolish, prudent, unsound)
1
asleep
1
balmy(adjective, violent, insane)
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APASmart Define. (2016). sensible thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/sensible/thesaurus/antonyms
ChicagoSmart Define. 2016. "sensible thesaurus" https://smartdefine.org/sensible/thesaurus/antonyms (accessed September 23, 2026).
HarvardSmart Define 2016, sensible thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/sensible/thesaurus/antonyms>.
MLASmart Define. "sensible thesaurus" 29 March 2016. Web. 23 September 2026. <https://smartdefine.org/sensible/thesaurus/antonyms>