| hare-brained | |
| ignorant(adjective, dull, simple, rough, slow) | |
| irksome | |
| jejune(adjective, dull, flat, slow, silly) | |
| jerky(adjective, weak, simple, silly, foolish) | |
| lethargic(adjective, action, dull, slow, cold) | |
| nitwit(noun, fool, foolish, sap) | |
| outlandish(adjective, offensive, rude, wild, silly) | |
| prosaic(adjective, dull, flat, ordinary, dry) | |
| rash(adjective, dull, sharp, rough, harsh) | |
| scatterbrained | |
| short-sighted(adjective, weak, simple, silly, foolish) | |
| simple-minded(adjective, dull, simple, slow, informal) | |
| stunned | |
| stupe | |
| stupid person(noun, expression, idiom) | |
| useless(adjective, weak, informal, offensive, rude) | |
| brute | |
| inept(adjective, dull, simple, sharp, flat) | |
| barmy(adjective, careless, silly, foolish, unwise) |
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| APA | Smart Define. (2016). stupid thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/stupid/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "stupid thesaurus" https://smartdefine.org/stupid/thesaurus/synonyms (accessed September 24, 2026). |
| Harvard | Smart Define 2016, stupid thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/stupid/thesaurus/synonyms>. |
| MLA | Smart Define. "stupid thesaurus" 2 April 2016. Web. 24 September 2026. <https://smartdefine.org/stupid/thesaurus/synonyms> |