46 entries under expression topic. ×
| mentally ill(adjective, idiom, sane, unwell) | |
| non compos mentis(noun, adjective, idiom, law) | |
| round the bend(adjective, idiom, silly, foolish) | |
| of unsound mind(adjective, idiom, foolish, stupid) | |
| out to lunch(adjective, idiom, silly, foolish) | |
| around the bend(adjective, idiom, wrong, confused) | |
| off the wall(adjective, idiom, light, silly) | |
| bats in the belfry(idiom, silly, foolish, unwise) | |
| beyond all reason(idiom, silly, foolish, fantastic) | |
| crazy as a loon(adjective, idiom, wrong, confused) | |
| just plain nuts | |
| lots of laughs(adjective, idiom, pleasant, happy) | |
| mad as a March hare(idiom, silly, foolish, unwise) | |
| mad as a hatter(adjective, idiom, silly, foolish) | |
| nutty as fruitcake(idiom, silly, foolish, unwise) | |
| off the hinges | |
| off the track | |
| out of all reason(idiom, silly, foolish, fantastic) | |
| screw loose(silly, foolish, unwise, unglued) | |
| acting crazy(adjective, silly, foolish, crazy) |
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| APA | Smart Define. (2015). loony thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/loony/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "loony thesaurus" https://smartdefine.org/loony/thesaurus/synonyms (accessed September 22, 2026). |
| Harvard | Smart Define 2015, loony thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/loony/thesaurus/synonyms>. |
| MLA | Smart Define. "loony thesaurus" 10 April 2015. Web. 22 September 2026. <https://smartdefine.org/loony/thesaurus/synonyms> |