103 entries under flimsy topic. ×

6
dilapidated(adjective, feeble, shaky, frail)
6
lunatic(adjective, foolish, crazy, mad, unstable)
6
puny(adjective, strong, light, weak, slight)
6
ramshackle(adjective, feeble, shaky, dilapidated)
6
weakly(adjective, strong, weak, delicate, uncertain)
5
debilitated(adjective, weak, delicate, uncertain, ill)
5
frangible(adjective, weak, delicate, feeble, infirm)
5
in poor health(expression, adjective, idiom, weak, well)
5
incongruous(adjective, false, silly, stupid, insignificant)
5
tottering(adjective, weak, feeble, well, unsettled)
4
bedraggled(adjective, feeble, frail, dilapidated)
4
breakable(adjective, weak, delicate, feeble, infirm)
4
unhinged(adjective, simple, foolish, crazy, well)
4
unreal(adjective, light, weak, wrong, slight)
3
imaginary(adjective, light, weak, wrong, slight)
3
tenuous(adjective, light, weak, slight, thin)
2
chimerical(adjective, light, weak, slight, imaginary)
2
effete(adjective, uncertain, feeble, hesitant, frail)
2
illusory(adjective, light, weak, slight, imaginary)
2
jerry-built(adjective, weak, unstable, unsettled, shaky)
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APASmart Define. (2015). unsound thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/unsound/thesaurus/synonyms
ChicagoSmart Define. 2015. "unsound thesaurus" https://smartdefine.org/unsound/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2015, unsound thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/unsound/thesaurus/synonyms>.
MLASmart Define. "unsound thesaurus" 14 April 2015. Web. 28 September 2026. <https://smartdefine.org/unsound/thesaurus/synonyms>