- Definitions|2
- Thesaurus|3.8k
- Abbreviations|0
| nitwitted(adjective, simple, silly, stupid, senseless) | |
| potty(adjective, wild, silly, stupid, crazy) | |
| reasonless(stupid, unreasonable, senseless, irrational, illogical) | |
| screwball(adjective, silly, unwise) | |
| sentimental | |
| shortsighted(adjective, dull, unintelligent, witless, unmindful) | |
| superficial | |
| thickheaded | |
| unadvisable(adjective, careless, thoughtless, rash, irresponsible) | |
| unreasoning(careless, stupid, unreasonable, thoughtless, irrational) | |
| unstable(careless, stupid, unreasonable, fantastic, unthinking) | |
| unwary(adjective, careless, stupid, thoughtless, impulsive) | |
| vacant(adjective, careless, indifferent, silly, stupid) | |
| vain(adjective, slight, silly, trivial, ridiculous) | |
| airy | |
| apish | |
| beaglebrained(adjective, stupid) | |
| bemused(crazy, hysterical, psychotic) | |
| bird-brained | |
| brain-dead(adjective, stupid) |
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| APA | Smart Define. (2016). foolish thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/foolish/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "foolish thesaurus" https://smartdefine.org/foolish/thesaurus/synonyms (accessed September 21, 2026). |
| Harvard | Smart Define 2016, foolish thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/foolish/thesaurus/synonyms>. |
| MLA | Smart Define. "foolish thesaurus" 24 March 2016. Web. 21 September 2026. <https://smartdefine.org/foolish/thesaurus/synonyms> |