- Definitions|2
- Thesaurus|3.7k
- Abbreviations|0
126 entries under foolish topic. ×
| ill-conceived(silly, unwise, impractical, half-baked) | |
| invalid | |
| irresponsible(silly, unwise, impractical, half-baked) | |
| mad as a March hare(expression, idiom, silly, unwise) | |
| mad as a hatter(expression, idiom, silly, unwise) | |
| maniacal(silly, unwise) | |
| mental(silly, unwise) | |
| mentally strange(expression, silly, unwise) | |
| moonstruck(silly, unwise) | |
| non compos mentis(expression, idiom) | |
| nuts(silly, unwise) | |
| nutty as fruitcake(expression, idiom, silly, unwise) | |
| out to lunch(expression, idiom, silly, unwise) | |
| potty(silly, unwise) | |
| psycho(silly, unwise) | |
| puerile(silly, unwise, impractical, half-baked) | |
| round the bend(expression, idiom, silly, unwise) | |
| schizo(silly, unwise) | |
| screw loose(expression, silly, unwise) | |
| screwball(silly, unwise) |
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| APA | Smart Define. (2016). fantastic thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/fantastic/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "fantastic thesaurus" https://smartdefine.org/fantastic/thesaurus/synonyms (accessed September 28, 2026). |
| Harvard | Smart Define 2016, fantastic thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/fantastic/thesaurus/synonyms>. |
| MLA | Smart Define. "fantastic thesaurus" 30 March 2016. Web. 28 September 2026. <https://smartdefine.org/fantastic/thesaurus/synonyms> |