Synonyms|860Antonyms|162|Broader|10Narrower|5Related|1.4k
3
valueless(adjective, value, insignificant, unimportant, empty)
3
wispy(adjective, light, weak, thin, delicate)
3
worthless(adjective, value, insignificant, unimportant, trivial)
2
adolescent
2
airy-fairy
2
baseless
2
breakable(adjective, weak, delicate, infirm, flimsy)
2
capricious
2
changeable
2
chimeric(adjective, strange, fantasy, unreal)
2
cobwebby(adjective, light, delicate, airy, fragile)
2
dainty(adjective, light, weak, slight, easy)
2
dangerous(false, unstable, ill, shaky, insane)
2
deciduous
2
delusional(adjective, strange, fantasy, unreal)
2
fake(false, imaginary, fanciful, illusory, dreamlike)
2
feathery(adjective, light, slight, easy, thin)
2
fictional(adjective, strange, negative, fantasy, imaginary)
2
fictitious(fake, false, imaginary, fanciful, illusory)
2
finespun(adjective, light, airy, fragile, transparent)
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APASmart Define. (2016). insubstantial thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/insubstantial/thesaurus/synonyms
ChicagoSmart Define. 2016. "insubstantial thesaurus" https://smartdefine.org/insubstantial/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2016, insubstantial thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/insubstantial/thesaurus/synonyms>.
MLASmart Define. "insubstantial thesaurus" 30 March 2016. Web. 25 September 2026. <https://smartdefine.org/insubstantial/thesaurus/synonyms>