250 entries under noun topic. ×
| crazy(informal, wise, fanatic, crackpot) | |
| fool(person, simple, fool, stupid) | |
| idiot(simple, fool, innocent, jerk) | |
| nut(slang, informal, mad, sick) | |
| clod(simple, fool, innocent, jerk) | |
| crackpot(fool, crazy, mad, wise) | |
| loony(slang, informal, sick, wise) | |
| birdbrain(simple, fool, innocent, jerk) | |
| dullard | |
| dunce(simple, fool, innocent, jerk) | |
| lunatic(person, mad, wise, crackpot) | |
| screwball(slang, sick, wise, mad person) | |
| cuckoo(slang, mad, sick, wise) | |
| kook(slang, mad, sick, wise) | |
| diver | |
| dolt(simple, fool, innocent, jerk) | |
| dope(simple, fool, innocent, jerk) | |
| maniac(person, crazy, mad, patient) | |
| nincompoop(simple, fool, innocent, jerk) | |
| nitwit(simple, fool, innocent, jerk) |
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| APA | Smart Define. (2016). loon thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/loon/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "loon thesaurus" https://smartdefine.org/loon/thesaurus/synonyms (accessed September 26, 2026). |
| Harvard | Smart Define 2016, loon thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/loon/thesaurus/synonyms>. |
| MLA | Smart Define. "loon thesaurus" 29 February 2016. Web. 26 September 2026. <https://smartdefine.org/loon/thesaurus/synonyms> |