99 entries under flimsy topic. ×

1
unsound(light, weak, slight, feeble, infirm)
1
wanting(adjective, close, light, slight, poor)
0
aerial(light, weak, slight, imaginary)
0
chimerical(light, weak, slight, imaginary)
0
disposable(adjective, frail, slim, insubstantial)
0
ephemeral(light, weak, slight, imaginary)
0
false(light, weak, slight, imaginary)
0
far out(expression, unreasonable, dubious, unlikely)
0
farfetched(unreasonable, dubious, unlikely, unbelievable)
0
fibrous(tough, delicate, sinewy)
0
fly-by-night(light, weak, slight, imaginary)
0
illusory(light, weak, slight, imaginary)
0
imaginary(light, weak, slight)
0
immaterial(adjective, light, weak, slight, puny)
0
metaphysical(light, weak, slight, imaginary)
0
not likely(expression, unreasonable, dubious, unlikely)
0
puzzling(unreasonable, dubious, unlikely, unbelievable)
0
unreal(light, weak, slight, imaginary)
0
unreasonable(dubious, unlikely, unbelievable, improbable)
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APASmart Define. (2016). thin thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/thin/thesaurus/synonyms
ChicagoSmart Define. 2016. "thin thesaurus" https://smartdefine.org/thin/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2016, thin thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/thin/thesaurus/synonyms>.
MLASmart Define. "thin thesaurus" 22 January 2016. Web. 23 September 2026. <https://smartdefine.org/thin/thesaurus/synonyms>