| off one's chump | |
| off the wall(expression, adjective, idiom, light, silly) | |
| outlandish(adjective, silly, foolish, unwise) | |
| outrageous(adjective, silly, foolish, fantastic, unwise) | |
| paranoiac(noun, adjective) | |
| psychopathic(adjective, silly, foolish, stupid, crazy) | |
| raving(adjective, silly, foolish, stupid, crazy) | |
| reasonless(foolish, unreasonable, illogical) | |
| reckless(adjective, crazy, mad, odd, insane) | |
| risible | |
| sentimental | |
| soft | |
| unglued(adjective, crazy, mad, odd, insane) | |
| unsettled(silly, foolish, stupid, crazy, senseless) | |
| unwise(weak, simple, silly, foolish, unreasonable) | |
| vacuous(adjective, careless, stupid, unthinking, obtuse) | |
| wacko | |
| weak-minded | |
| weird(adjective, strange, silly, foolish, fantastic) | |
| abnormal |
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| APA | Smart Define. (2015). loony thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/loony/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "loony thesaurus" https://smartdefine.org/loony/thesaurus/synonyms (accessed September 25, 2026). |
| Harvard | Smart Define 2015, loony thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/loony/thesaurus/synonyms>. |
| MLA | Smart Define. "loony thesaurus" 10 April 2015. Web. 25 September 2026. <https://smartdefine.org/loony/thesaurus/synonyms> |