- Definitions|2
- Thesaurus|3.8k
- Abbreviations|0
498 entries under adjective topic. ×
| inconsequential(stupid, trivial, senseless, irrational) | |
| inexpedient(careless, unreasonable, thoughtless, impulsive) | |
| insignificant(silly, stupid, trivial, incompetent) | |
| invalid(unreasonable, fantastic, absurd, irrational) | |
| mistaken(unreasonable, unwise, ill-advised, deluded) | |
| negligent(careless, silly, thoughtless, senseless) | |
| playful | |
| rattle-brained | |
| slow(dull, simple, silly, stupid) | |
| sophomoric(impulsive, reckless, inexperienced, impractical) | |
| sportive | |
| tasteless(offensive, vulgar, cheap, loud) | |
| thick-witted(stupid, crazy, insane) | |
| uncalled-for | |
| undiscerning(careless, stupid, unthinking, obtuse) | |
| uneducated(rough, silly, stupid, crude) | |
| unperceptive(obtuse, unobservant) | |
| vapid | |
| waggish | |
| wrong(careless, stupid, crazy, unreasonable) |
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| APA | Smart Define. (2016). foolish thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/foolish/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "foolish thesaurus" https://smartdefine.org/foolish/thesaurus/synonyms (accessed September 24, 2026). |
| Harvard | Smart Define 2016, foolish thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/foolish/thesaurus/synonyms>. |
| MLA | Smart Define. "foolish thesaurus" 24 March 2016. Web. 24 September 2026. <https://smartdefine.org/foolish/thesaurus/synonyms> |