- Definitions|2
- Thesaurus|3.2k
- Abbreviations|0
172 entries under foolish topic. ×
| ill-conceived(silly, fantastic, unwise, impractical) | |
| ill-considered(adjective, weak, simple, silly) | |
| impracticable(silly, fantastic, unwise, impractical) | |
| inappropriate(silly, fantastic, unwise, impractical) | |
| invalid(unreasonable, ill, unhealthy, frail) | |
| keen(adjective, silly, crazy, mad) | |
| mentally strange(expression, adjective, silly, mad) | |
| nerdy(weak, simple, silly, thoughtless) | |
| off the wall(expression, adjective, idiom, simple, silly) | |
| out of all reason(expression, idiom, silly, fantastic) | |
| quixotic(silly, fantastic, unwise, impractical) | |
| screw loose(expression, silly, mad, unwise) | |
| simple(weak, silly, thoughtless, unsound) | |
| specious(false, unreasonable, ill, unhealthy) | |
| unusual(adjective, silly, stupid, crazy) | |
| unworkable(silly, fantastic, unwise, impractical) | |
| weak(simple, silly, ill, thoughtless) | |
| zealous(adjective, silly, crazy, mad) | |
| baseless(unreasonable, illogical) | |
| beyond reason(expression, fantastic, unrealistic) |
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| APA | Smart Define. (2015). insane thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/insane/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "insane thesaurus" https://smartdefine.org/insane/thesaurus/synonyms (accessed September 25, 2026). |
| Harvard | Smart Define 2015, insane thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/insane/thesaurus/synonyms>. |
| MLA | Smart Define. "insane thesaurus" 10 April 2015. Web. 25 September 2026. <https://smartdefine.org/insane/thesaurus/synonyms> |