51 entries under weightless topic. ×

30
insubstantial(adjective, dull, body, strong, light)
27
flimsy(adjective, strong, light, weak, great)
19
thin(adjective, dull, light, weak, great)
18
lightweight(adjective, light, slight, easy, thin)
17
slight(adjective, light, weak, soft, easy)
16
light(adjective, weak, soft, slight, thin)
14
ethereal(adjective, light, slight, easy, thin)
10
delicate(adjective, strong, light, weak, slight)
9
airy(adjective, light, weak, slight, easy)
7
trivial(adjective, light, weak, soft, slight)
6
trifling(adjective, light, weak, soft, slight)
4
dainty(adjective, light, weak, slight, easy)
4
gossamery(adjective, light, slight, easy, thin)
4
inconsequential(adjective, light, weak, soft, slight)
3
petty(adjective, light, weak, slight, easy)
3
small(adjective, light, weak, slight, easy)
3
wispy(adjective, weak, fine, thin, delicate)
2
crumbly(adjective, light, slight, easy, thin)
2
little(adjective, light, weak, slight, easy)
2
meager(adjective, light, weak, slight, easy)
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APASmart Define. (2016). unsubstantial thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/unsubstantial/thesaurus/synonyms
ChicagoSmart Define. 2016. "unsubstantial thesaurus" https://smartdefine.org/unsubstantial/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2016, unsubstantial thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/unsubstantial/thesaurus/synonyms>.
MLASmart Define. "unsubstantial thesaurus" 30 March 2016. Web. 25 September 2026. <https://smartdefine.org/unsubstantial/thesaurus/synonyms>