4
speculative(adjective, delicate, uncertain, sensitive, risky)
4
tender(adjective, weak, delicate, uncertain, feeble)
4
tottery(adjective, weak, unstable, unsettled, shaky)
4
unacceptable(adjective, bad, nasty, dirty, inferior)
4
unfavorable(adjective, bad, poor, small, insignificant)
4
unhinged(adjective, simple, foolish, crazy, well)
4
unjustified
4
unpredictable(adjective, careless, loose, uncertain, unreliable)
4
unproved
4
unreal(adjective, light, weak, wrong, slight)
4
unsupported
4
untrustworthy(adjective, wrong, false, loose, uncertain)
4
wicked(adjective, severe, delicate, awful, terrible)
3
anemic(adjective, weak, poor, delicate, small)
3
asinine(adjective, simple, silly, foolish, stupid)
3
bananas(adjective, slang, foolish, crazy, mad)
3
blemished
3
bogus(adjective, wrong, fake, deception, false)
3
counterfeit(adjective, fake, deception, sham, phony)
3
crippled(disease, feeble, dilapidated, debilitated, deteriorated)
11 years ago|31k views|share |citing 
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>