Synonyms|796Antonyms|149|Broader|10Narrower|0Related|951

88 entries under slight topic. ×

8
diaphanous(adjective, weak, thin, substance)
8
puny(adjective, strong, light, weak, soft)
7
chimerical(adjective, light, weak, gentle)
7
trivial(adjective, light, weak, soft)
6
ephemeral(light, weak, frail, imaginary)
6
metaphysical(adjective, body, light, weak)
6
poor(adjective, dull, light, weak, soft)
6
trifling(adjective, light, weak, soft)
5
aerial(adjective, light, weak, substance)
5
false(bad, light, weak, ill)
5
imponderable(adjective, light, weak, heavenly)
5
inadequate(adjective, dull, light, weak, soft)
5
sleazy(adjective, weak, thin, feeble)
5
weightless(adjective, light, easy, thin)
4
dainty(adjective, light, weak, easy)
4
gossamery(adjective, light, easy, thin)
4
inconsequential(adjective, light, weak, soft)
3
petty(adjective, light, weak, easy)
3
small(adjective, light, weak, easy)
3
wobbly(adjective, weak, thin, delicate)
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ChicagoSmart Define. 2016. "unsubstantial thesaurus" https://smartdefine.org/unsubstantial/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2016, unsubstantial thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/unsubstantial/thesaurus/synonyms>.
MLASmart Define. "unsubstantial thesaurus" 30 March 2016. Web. 27 September 2026. <https://smartdefine.org/unsubstantial/thesaurus/synonyms>