8
deficient(adjective, poor, small, insignificant, unimportant)
8
inexact(adjective, bad, wrong, fake, false)
8
injured(adjective, hurt, imperfection, deficient, broken)
8
insane(adjective, wrong, silly, foolish, stupid)
8
irresponsible(adjective, characteristic, quality, finance, banking)
8
mistaken(adjective, bad, correct, wrong, fake)
8
poor(adjective, bad, small, insignificant, unimportant)
8
senseless(adjective, wrong, false, careless, silly)
8
spurious(adjective, bad, correct, wrong, fake)
7
absurd(adjective, wrong, silly, foolish, stupid)
7
broken(adjective, deficient, incomplete, inexact, warped)
7
crazy(adjective, wrong, silly, foolish, stupid)
7
daft(adjective, silly, foolish, stupid, crazy)
7
dangerous(adjective, severe, delicate, awful, terrible)
7
morbid(adjective, disease, nasty, offensive, gloomy)
7
sophistic(adjective, correct, foolish, true, unreasonable)
7
uncertain(adjective, delicate, loose, sensitive, feeble)
6
baseless(adjective, foolish, unreasonable, worthless, unacceptable)
6
broken-down(adjective, feeble, shaky, broken, dilapidated)
6
decayed
11 years ago|31k views|share |citing 
APASmart Define. (2015). unsound thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/unsound/thesaurus/synonyms
ChicagoSmart Define. 2015. "unsound thesaurus" https://smartdefine.org/unsound/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, unsound thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/unsound/thesaurus/synonyms>.
MLASmart Define. "unsound thesaurus" 14 April 2015. Web. 24 September 2026. <https://smartdefine.org/unsound/thesaurus/synonyms>