- Definitions|2
- Thesaurus|1.9k
- Abbreviations|0
350 entries under adjective topic. ×
| insubstantial(dull, body, strong, light) | |
| flimsy(strong, light, weak, great) | |
| weak(dull, strong, light, great) | |
| unreal(gentle, fake, substance, trivial) | |
| fragile(strong, light, weak, slight) | |
| frail(strong, light, weak, slight) | |
| thin(dull, light, weak, great) | |
| feeble(dull, strong, light, weak) | |
| imaginary(light, gentle, substance, strange) | |
| immaterial(form, body, light, weak) | |
| lightweight(light, slight, easy, thin) | |
| slight(light, weak, soft, easy) | |
| unbelievable(extraordinary, strange, unreasonable, fantasy) | |
| light(weak, soft, slight, thin) | |
| ethereal(light, slight, easy, thin) | |
| vaporous(negative, frail, unreal, vacant) | |
| visionary(gentle, obscure, substance, strange) | |
| fantastic(gentle, extraordinary, strange, fantasy) | |
| intangible(gentle, abstract, heavenly, indefinite) | |
| shaky(weak, slight, thin, delicate) |
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| APA | Smart Define. (2016). unsubstantial thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/unsubstantial/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "unsubstantial thesaurus" https://smartdefine.org/unsubstantial/thesaurus/synonyms (accessed September 25, 2026). |
| Harvard | Smart Define 2016, unsubstantial thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/unsubstantial/thesaurus/synonyms>. |
| MLA | Smart Define. "unsubstantial thesaurus" 30 March 2016. Web. 25 September 2026. <https://smartdefine.org/unsubstantial/thesaurus/synonyms> |