| liquid(noun, adjective, weak, loose, unstable) | |
| fluid(noun, adjective, weak, loose, unstable) | |
| feeble(adjective, strong, fit, ineffective) | |
| hollow(noun, adjective, area, empty, out) | |
| broken(verb, adjective, weak, loose, unstable) | |
| gaseous(adjective, weak, loose, unstable, wobbly) | |
| soft | |
| not good | |
| flimsy(adjective, strong, light, sound, thin) | |
| insubstantial(adjective, weak, loose, unstable, wobbly) | |
| runny | |
| unreliable(adjective, weak, loose, unstable, wobbly) | |
| watery(adjective, dry, liquid, diluted) | |
| ever-changing | |
| feeling(noun, apathy, reticulation, caldera, firewater) | |
| fragile | |
| frail(strong, sound) | |
| jejune | |
| loose(adjective, weak, unstable, wobbly) | |
| tenuous(adjective, weak, loose, unstable, wobbly) |
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| APA | Smart Define. (2016). solid thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/solid/thesaurus/antonyms |
| Chicago | Smart Define. 2016. "solid thesaurus" https://smartdefine.org/solid/thesaurus/antonyms (accessed September 22, 2026). |
| Harvard | Smart Define 2016, solid thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/solid/thesaurus/antonyms>. |
| MLA | Smart Define. "solid thesaurus" 29 March 2016. Web. 22 September 2026. <https://smartdefine.org/solid/thesaurus/antonyms> |