103 entries under flimsy topic. ×

2
makeshift(adjective, poor, uncertain, feeble, hesitant)
2
seedy(adjective, feeble, frail, dilapidated)
2
slight(adjective, light, weak, thin, delicate)
1
anile(adjective, weak, delicate, ill, sick)
1
battered(feeble, frail, dilapidated, debilitated)
1
creaky(feeble, frail, dilapidated, debilitated)
1
doddering(feeble, frail, dilapidated, debilitated)
1
fanciful(adjective, light, weak, wrong, slight)
1
fly-by-night(adjective, light, weak, slight, thin)
1
idle(light, weak, slight, imaginary)
1
incapacitated(feeble, frail, debilitated, deteriorated)
1
not solid(expression, adjective, ill, well, unhealthy)
1
petty(light, weak, slight, feeble, tiny)
1
quavering(feeble, frail, dilapidated, debilitated)
1
senile(adjective, uncertain, feeble, frail, puny)
1
slender(adjective, light, weak, slight, thin)
1
tacky(weak, slight, thin, feeble)
1
thin(light, weak, slight, feeble, infirm)
1
tumble-down(feeble, shaky, frail, unsteady)
1
unbacked(adjective, ill, well, unhealthy, frail)
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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>