| dullard | |
| dumbstruck(silent, dazed, astonished, thunderstruck, flabbergasted) | |
| dunce | |
| extinguish(verb, calm, dull, quiet, suppress) | |
| fatheaded(dull, slow, stupid) | |
| fatuitous | |
| fopdoodle | |
| futile(dull, unintelligent, witless) | |
| hare-brained | |
| headless | |
| hush(verb, adjective, calm, dull, close) | |
| hush-hush(verb, calm, dull, quiet, suppress) | |
| hushed(adjective, close, quiet, soft, low) | |
| idiot(noun, absence or want of intellect, idk, IDK) | |
| indistinct(quiet, soft, still, confused, silent) | |
| inexperienced(adjective, silly, stupid, green, fat) | |
| irresponsible(foolish, stupid, impractical, half-baked, doomed) | |
| keep it down(verb, expression, idiom, phrasal verb, calm) | |
| leaden | |
| lull(verb, calm, dull, quiet, suppress) |
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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> |