122 entries under light topic. ×

10
gossamer(adjective, thin, feeble, flimsy)
10
unsound(adjective, strong, weak, slight)
9
puny(adjective, strong, weak, slight)
9
trifling(adjective, slight, easy, thin)
8
inconsequential(adjective, slight, easy, thin)
8
infirm(adjective, strong, weak, slight)
7
false(adjective, weak, slight, fake)
7
metaphysical(adjective, body, weak, slight)
7
small(adjective, weak, slight, easy)
6
chimerical(adjective, weak, negative, imaginary)
6
filmy(adjective, slight, easy, thin)
6
gauzy(adjective, weak, thin, feeble)
6
inadequate(adjective, dull, weak, soft)
6
slender(adjective, mean, weak, slight)
5
diaphanous(adjective, weak, thin, feeble)
5
gossamery(adjective, slight, easy, thin)
5
meager(adjective, mean, weak, slight)
5
petty(adjective, weak, slight, easy)
4
aerial(adjective, weak, slight, fake)
4
fine(adjective, slight, delicate, flimsy)
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APASmart Define. (2016). insubstantial thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/insubstantial/thesaurus/synonyms
ChicagoSmart Define. 2016. "insubstantial thesaurus" https://smartdefine.org/insubstantial/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2016, insubstantial thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/insubstantial/thesaurus/synonyms>.
MLASmart Define. "insubstantial thesaurus" 30 March 2016. Web. 26 September 2026. <https://smartdefine.org/insubstantial/thesaurus/synonyms>