20 entries under sound topic. ×
| stable(adjective, clear, weak, soft) | |
| steady(adjective, clear, stable, fixed) | |
| strong(adjective, clear, steady) | |
| firm(noun, adjective, clear, steady) | |
| certain(adjective, clear, steady) | |
| constant(adjective, clear, sympathetic, steady) | |
| sane(adjective, reasonable, stupid, insane) | |
| easy(adjective, clear, steady) | |
| reliable(adjective, clear, bad, weak) | |
| secure(verb, adjective, clear, weak) | |
| sure(adjective, clear, steady) | |
| unchanging(adjective, clear, steady) | |
| definite(adjective, clear, steady) | |
| dependable(adjective, clear, weak, steady) | |
| predictable(adjective, clear, steady) | |
| clear(adjective, steady) | |
| guarded(adjective, clear, steady) | |
| protected(adjective, clear, steady) | |
| safe(adjective, clear, steady) | |
| unshaky(adjective, clear, steady) |
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| APA | Smart Define. (2016). unstable thesaurus. Retrieved September 30, 2026, from https://smartdefine.org/unstable/thesaurus/antonyms |
| Chicago | Smart Define. 2016. "unstable thesaurus" https://smartdefine.org/unstable/thesaurus/antonyms (accessed September 30, 2026). |
| Harvard | Smart Define 2016, unstable thesaurus, Smart Define, viewed 30 September, 2026, <https://smartdefine.org/unstable/thesaurus/antonyms>. |
| MLA | Smart Define. "unstable thesaurus" 26 February 2016. Web. 30 September 2026. <https://smartdefine.org/unstable/thesaurus/antonyms> |