| unanswered(adjective, calm, quiet, humble, shy) | |
| uncommunicative(adjective, close, quiet, soft, low) | |
| unreciprocated(adjective, calm, quiet, humble, shy) | |
| without response(adjective, calm, quiet, humble, shy) | |
| dizzy(adjective, confused) | |
| mad | |
| simple-minded(adjective, dull, simple, slow, silly) | |
| tongueless(silent, voiceless, aphony) | |
| aphasic(silent, voiceless) | |
| batty(adjective, foolish, crazy, impulsive, insane) | |
| cloddish | |
| close(adjective, quiet, soft, low, restrained) | |
| cuckoo(noun, adjective) | |
| daffy(adjective, simple, slow, silly, foolish) | |
| dull-witted | |
| feebleminded(adjective, foolish, stupid, unintelligent, mindless) | |
| gormless | |
| ludicrous(adjective, dull, foolish, stupid, half-baked) | |
| lumpish(adjective, dull, simple, slow, heavy) | |
| naive(dull, unintelligent, witless) |
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| APA | Smart Define. (2016). dumb thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/dumb/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "dumb thesaurus" https://smartdefine.org/dumb/thesaurus/synonyms (accessed September 23, 2026). |
| Harvard | Smart Define 2016, dumb thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/dumb/thesaurus/synonyms>. |
| MLA | Smart Define. "dumb thesaurus" 29 March 2016. Web. 23 September 2026. <https://smartdefine.org/dumb/thesaurus/synonyms> |