147 entries under weak topic. ×

8
puny(adjective, strong, light, soft)
7
chimerical(adjective, light, slight, gentle)
7
trivial(adjective, light, soft, slight)
7
unstable(adjective, delicate, false, ill)
6
ephemeral(light, slight, frail, imaginary)
6
insecure(adjective, delicate, false, unstable)
6
metaphysical(adjective, body, light, slight)
6
paltry(adjective, small, insignificant, unimportant)
6
poor(adjective, dull, light, soft)
6
trifling(adjective, light, soft, slight)
5
aerial(adjective, light, slight, substance)
5
breakable(adjective, delicate, feeble, infirm)
5
false(bad, light, slight, ill)
5
frangible(adjective, delicate, feeble, infirm)
5
imponderable(adjective, light, slight, heavenly)
5
inadequate(adjective, dull, light, soft)
5
sleazy(adjective, slight, thin, feeble)
5
unimportant(adjective, soft, gentle, mild)
5
weakly(adjective, strong, delicate, uncertain)
4
dainty(adjective, light, slight, easy)
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APASmart Define. (2016). unsubstantial thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/unsubstantial/thesaurus/synonyms
ChicagoSmart Define. 2016. "unsubstantial thesaurus" https://smartdefine.org/unsubstantial/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2016, unsubstantial thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/unsubstantial/thesaurus/synonyms>.
MLASmart Define. "unsubstantial thesaurus" 30 March 2016. Web. 26 September 2026. <https://smartdefine.org/unsubstantial/thesaurus/synonyms>