554 entries under adjective topic. ×

16
unfounded(wrong, fake, false, counterfeit)
14
diseased(ill, well, unhealthy, unfit)
14
groundless(foolish, unreasonable, error, reasoning)
14
mad(wrong, false, silly, foolish)
14
unsafe(characteristic, quality, finance, dangerous)
14
untenable(false, reasoning, defended, indefensible)
13
bad(bad, imperfection)
13
imperfect(short, imperfection, deficient, broken)
13
incorrect(bad, correct, wrong, fake)
13
insubstantial(strong, light, weak, slight)
13
unreasonable(wrong, false, silly, foolish)
13
unsteady(weak, uncertain, unstable, ill)
13
unsubstantial(bad, strong, light, weak)
12
ailing(weak, delicate, dark, gloomy)
12
damaged(hurt, deficient, broken, incomplete)
12
delicate(strong, weak, slight, thin)
12
flimsy(strong, light, weak, slight)
12
inaccurate(bad, correct, wrong, fake)
12
sick(weak, poor, false, inferior)
12
specious(bad, correct, wrong, fake)
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APASmart Define. (2015). unsound thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/unsound/thesaurus/synonyms
ChicagoSmart Define. 2015. "unsound thesaurus" https://smartdefine.org/unsound/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2015, unsound thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/unsound/thesaurus/synonyms>.
MLASmart Define. "unsound thesaurus" 14 April 2015. Web. 26 September 2026. <https://smartdefine.org/unsound/thesaurus/synonyms>