253 entries under stupid topic. ×

3
illiterate(adjective, silly, green, fat)
3
impractical(adjective, careless, silly, unreasonable)
3
improvident(adjective, careless, thoughtless, impulsive)
3
inconsequential(adjective, trivial, senseless, irrational)
3
insignificant(adjective, silly, trivial, incompetent)
3
simpleminded(dull, silly, unintelligent, witless)
3
slow(adjective, dull, simple, silly)
3
thick-witted(adjective, crazy, insane)
3
undiscerning(adjective, careless, unthinking, obtuse)
3
uneducated(adjective, rough, silly, crude)
3
wrong(adjective, careless, crazy, unreasonable)
2
arbitrary(senseless, irrational, perverse, caprice)
2
birdbrained(silly, crazy, insane, unintelligent)
2
blind(adjective, careless, thoughtless, unthinking)
2
contradictory(adjective, senseless, absurd, irrational)
2
credulous(adjective, silly, innocent, green)
2
deranged(adjective, simple, wild, silly)
2
futile(adjective, dull, simple, slow, silly)
2
gullible(adjective, dull, simple, slow, silly)
2
hysterical(adjective, rough, wild, crazy)
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APASmart Define. (2016). foolish thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/foolish/thesaurus/synonyms
ChicagoSmart Define. 2016. "foolish thesaurus" https://smartdefine.org/foolish/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2016, foolish thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/foolish/thesaurus/synonyms>.
MLASmart Define. "foolish thesaurus" 24 March 2016. Web. 25 September 2026. <https://smartdefine.org/foolish/thesaurus/synonyms>