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

350 entries under adjective topic. ×

7
incredible(extraordinary, strange, unreasonable, fantasy)
7
spectral(dull, light, soft, poor)
7
spiritual(body, abstract, heavenly, theoretical)
7
trivial(light, weak, soft, slight)
7
unconvincing(thin, extraordinary, strange, unreasonable)
7
unstable(weak, delicate, false, ill)
7
unsteady(false, uncertain, unstable, ill)
6
insecure(weak, delicate, false, unstable)
6
jerry-built
6
metaphysical(body, light, weak, slight)
6
nonmaterial(abstract, heavenly, theoretical, abstruse)
6
nonphysical(body, abstract, heavenly, theoretical)
6
paltry(weak, small, insignificant, unimportant)
6
poor(dull, light, weak, soft)
6
trifling(light, weak, soft, slight)
5
aerial(light, weak, slight, substance)
5
breakable(weak, delicate, feeble, infirm)
5
delusional(strange, fantasy, unreal)
5
delusory(strange, fantasy, unreal)
5
discarnate(body, abstract, heavenly, theoretical)
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APASmart Define. (2016). unsubstantial thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/unsubstantial/thesaurus/synonyms
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>