19 entries under sound topic. ×

10
insane(adjective, sensible, foolish, ill)
8
crazy(adjective, calm, strange)
2
unsound(strong, well)
1
foolish
1
irrational
1
schizo
0
aper
0
bats in the belfry(expression, idiom, calm)
0
cockamamie
0
flipped-out
0
flipped out
0
mad as a March hare(expression, idiom, calm)
0
mad as a hatter(expression, idiom, calm)
0
nutty as fruitcake(expression, idiom, calm)
0
of unsound mind(expression, idiom, calm)
0
off-the-wall
0
round the bend(expression, idiom, calm)
0
screw loose(expression, calm)
0
wobbly
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APASmart Define. (2016). balanced thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/balanced/thesaurus/antonyms
ChicagoSmart Define. 2016. "balanced thesaurus" https://smartdefine.org/balanced/thesaurus/antonyms (accessed September 26, 2026).
HarvardSmart Define 2016, balanced thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/balanced/thesaurus/antonyms>.
MLASmart Define. "balanced thesaurus" 12 February 2016. Web. 26 September 2026. <https://smartdefine.org/balanced/thesaurus/antonyms>