554 entries under adjective topic. ×

27
faulty(bad, wrong, fake, poor)
24
weak(strong, light, slight, poor)
23
invalid(bad, weak, correct, wrong)
23
unstable(characteristic, quality, finance, banking)
21
infirm(strong, light, weak, slight)
21
unhealthy(weak, severe, disease, poor)
20
defective(bad, wrong, thin, false)
20
false(bad, light, weak, correct)
20
unreliable(dangerous, characteristic, quality, finance)
19
fallacious(bad, correct, wrong, fake)
19
wrong(bad, correct, fake, false)
18
frail(strong, light, weak, slight)
18
illogical(correct, wrong, false, silly)
18
shaky(weak, slight, thin, delicate)
17
risky(dangerous, characteristic, quality, finance)
16
erroneous(bad, correct, wrong, fake)
16
feeble(strong, light, weak, slight)
16
flawed(wrong, false, well, incorrect)
16
fragile(strong, light, weak, slight)
16
ill(weak, delicate, sick, feeble)
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APASmart Define. (2015). unsound thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/unsound/thesaurus/synonyms
ChicagoSmart Define. 2015. "unsound thesaurus" https://smartdefine.org/unsound/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2015, unsound thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/unsound/thesaurus/synonyms>.
MLASmart Define. "unsound thesaurus" 14 April 2015. Web. 25 September 2026. <https://smartdefine.org/unsound/thesaurus/synonyms>