19 entries under sound topic. ×
| insane(adjective, sensible, foolish, ill) | |
| crazy(adjective, calm, strange) | |
| unsound(strong, well) | |
| foolish | |
| irrational | |
| schizo | |
| aper | |
| bats in the belfry(expression, idiom, calm) | |
| cockamamie | |
| flipped-out | |
| flipped out | |
| mad as a March hare(expression, idiom, calm) | |
| mad as a hatter(expression, idiom, calm) | |
| nutty as fruitcake(expression, idiom, calm) | |
| of unsound mind(expression, idiom, calm) | |
| off-the-wall | |
| round the bend(expression, idiom, calm) | |
| screw loose(expression, calm) | |
| wobbly |
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| APA | Smart Define. (2016). balanced thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/balanced/thesaurus/antonyms |
| Chicago | Smart Define. 2016. "balanced thesaurus" https://smartdefine.org/balanced/thesaurus/antonyms (accessed September 26, 2026). |
| Harvard | Smart Define 2016, balanced thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/balanced/thesaurus/antonyms>. |
| MLA | Smart Define. "balanced thesaurus" 12 February 2016. Web. 26 September 2026. <https://smartdefine.org/balanced/thesaurus/antonyms> |