127 entries under silly topic. ×
| irrational(adjective, weak, simple, careless, wild) | |
| unhinged(adjective, foolish, stupid, unwise) | |
| cockeyed(adjective, knowledge, ability, informal) | |
| eccentric(noun, adjective, wild, strange) | |
| round the bend(expression, adjective, idiom, foolish) | |
| wild(adjective, wrong, strange, foolish) | |
| brainless(adjective, weak, simple, foolish) | |
| moonstruck(adjective, foolish, stupid, insane) | |
| out to lunch(expression, adjective, idiom, foolish) | |
| ridiculous(adjective, light, weak, simple, wrong) | |
| berserk(adjective, foolish, crazy, unwise) | |
| dizzy(adjective, light, pleasant, happy) | |
| flaky(adjective, light, stupid, crazy) | |
| thoughtless(adjective, careless, stupid, unwise) | |
| half-witted(adjective, weak, simple, foolish) | |
| cockamamie(adjective, weak, simple, wrong) | |
| doltish(adjective, weak, simple, careless) | |
| madcap(noun, adjective, person, crazy) | |
| odd(adjective, wild, strange, foolish) | |
| schizophrenic(noun, adjective, foolish, stupid) |
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| APA | Smart Define. (2015). loony thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/loony/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "loony thesaurus" https://smartdefine.org/loony/thesaurus/synonyms (accessed September 26, 2026). |
| Harvard | Smart Define 2015, loony thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/loony/thesaurus/synonyms>. |
| MLA | Smart Define. "loony thesaurus" 10 April 2015. Web. 26 September 2026. <https://smartdefine.org/loony/thesaurus/synonyms> |