- Definitions|2
- Thesaurus|2.4k
- Abbreviations|0
384 entries under adjective topic. ×
| imponderable(light, weak, slight, negative) | |
| insipid(light, soft, pastel) | |
| nonexistent(fake, false, real, imaginary) | |
| sleazy(weak, slight, thin, feeble) | |
| unconvincing(weak, flat, poor, thin) | |
| unsteady(false, uncertain, unstable, ill) | |
| weightless(light, slight, easy, thin) | |
| brittle(weak, delicate, infirm, flimsy) | |
| cranky(weakness, strange, fantasy, unreal) | |
| delusory(strange, fantasy, unreal) | |
| dilapidated(feeble, frail, flimsy, debilitated) | |
| dreamlike(fake, false, negative, imaginary) | |
| evanescent | |
| faint(dull, light, weak, soft) | |
| fleeting | |
| fly-by-night(light, weak, slight, short) | |
| gimcrack | |
| idle(light, weak, slight, trivial) | |
| illusional(strange, fantasy, unreal) | |
| illusionary(strange, fantasy, unreal) |
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| APA | Smart Define. (2016). insubstantial thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/insubstantial/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "insubstantial thesaurus" https://smartdefine.org/insubstantial/thesaurus/synonyms (accessed September 27, 2026). |
| Harvard | Smart Define 2016, insubstantial thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/insubstantial/thesaurus/synonyms>. |
| MLA | Smart Define. "insubstantial thesaurus" 30 March 2016. Web. 27 September 2026. <https://smartdefine.org/insubstantial/thesaurus/synonyms> |