287 entries under adjective topic. ×
| beaglebrained | |
| bleak | |
| cretinous | |
| cushion-witted | |
| empty(ineffective, fruitless) | |
| fat(silly, stupid, green, thick) | |
| halfwitted | |
| inaudible(close, quiet, soft, low) | |
| inert(dull, heavy, stupid, impassive) | |
| insensate(dull, simple, slow, informal) | |
| irrational | |
| jackass(noun, foolish) | |
| lost for words(calm, quiet, humble, silent) | |
| muted(close, quiet, soft, low) | |
| numskulled(dull, simple, slow, stupid) | |
| preposterous(impractical, half-baked, doomed) | |
| reserved(close, quiet, soft, low) | |
| sappy | |
| scatterbrained(simple, slow, silly, foolish) | |
| sluggish(dull, simple, slow, silly) |
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| APA | Smart Define. (2016). dumb thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/dumb/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "dumb thesaurus" https://smartdefine.org/dumb/thesaurus/synonyms (accessed September 25, 2026). |
| Harvard | Smart Define 2016, dumb thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/dumb/thesaurus/synonyms>. |
| MLA | Smart Define. "dumb thesaurus" 29 March 2016. Web. 25 September 2026. <https://smartdefine.org/dumb/thesaurus/synonyms> |