| blockhead(noun, fool, sap, rustic, lout) | |
| blunt(adjective, dull, heavy, thoughtless, impassive) | |
| clod | |
| cockamamie(weak, simple, foolish, unreasonable, illogical) | |
| comatose(adjective, dull, senseless, unconscious) | |
| deficient(adjective, dull, silly, foolish, intelligent) | |
| dimwit(noun, fool, sap) | |
| dizzy | |
| dope | |
| dozy | |
| dry(adjective, dull, flat, ordinary, boring) | |
| empty(adjective, dull, simple, silly, crazy) | |
| fatheaded(dull, slow) | |
| feebleminded(adjective, weak, simple, silly, foolish) | |
| foolhardy(adjective, silly, foolish, crazy, rash) | |
| gaga | |
| green(adjective, silly, incompetent, thick, naive) | |
| gullible(adjective, dull, simple, slow, silly) | |
| ho-hum | |
| imprudent(adjective, weak, simple, sharp, rough) |
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| APA | Smart Define. (2016). stupid thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/stupid/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "stupid thesaurus" https://smartdefine.org/stupid/thesaurus/synonyms (accessed September 23, 2026). |
| Harvard | Smart Define 2016, stupid thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/stupid/thesaurus/synonyms>. |
| MLA | Smart Define. "stupid thesaurus" 2 April 2016. Web. 23 September 2026. <https://smartdefine.org/stupid/thesaurus/synonyms> |