14
liquid(noun, adjective, weak, loose, unstable)
12
fluid(noun, adjective, weak, loose, unstable)
10
feeble(adjective, strong, fit, ineffective)
8
hollow(noun, adjective, area, empty, out)
6
broken(verb, adjective, weak, loose, unstable)
6
gaseous(adjective, weak, loose, unstable, wobbly)
6
soft
5
not good
5
flimsy(adjective, strong, light, sound, thin)
5
insubstantial(adjective, weak, loose, unstable, wobbly)
5
runny
5
unreliable(adjective, weak, loose, unstable, wobbly)
5
watery(adjective, dry, liquid, diluted)
4
ever-changing
4
feeling(noun, apathy, reticulation, caldera, firewater)
4
fragile
4
frail(strong, sound)
4
jejune
4
loose(adjective, weak, unstable, wobbly)
4
tenuous(adjective, weak, loose, unstable, wobbly)
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APASmart Define. (2016). solid thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/solid/thesaurus/antonyms
ChicagoSmart Define. 2016. "solid thesaurus" https://smartdefine.org/solid/thesaurus/antonyms (accessed September 22, 2026).
HarvardSmart Define 2016, solid thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/solid/thesaurus/antonyms>.
MLASmart Define. "solid thesaurus" 29 March 2016. Web. 22 September 2026. <https://smartdefine.org/solid/thesaurus/antonyms>