148 entries under dull topic. ×
| ponderous | |
| slothful(adjective, quiet, careless, heavy) | |
| snoozy(adjective, quiet, slow, careless) | |
| still(adjective, idle, sluggish, lifeless) | |
| stupefied(adjective, slow, cold, idle) | |
| benumbed | |
| blah(adjective, quiet, slow, informal) | |
| blunt | |
| bovine | |
| indifferent(adjective, quiet, beat, slow) | |
| jobless(adjective, idle, sluggish, lazy) | |
| obtuse(adjective, insensibility) | |
| quiescent(adjective, quiet, flat, indifferent) | |
| sedentary(adjective, idle, sluggish, lazy) | |
| slack(still, idle, sluggish, late) | |
| spiritless(adjective, slow, relaxed, still) | |
| stagnant(sluggish, late, lazy, listless) | |
| dopey(adjective, quiet, slow, relaxed) | |
| stupid(adjective, cold, dead, senseless) | |
| unemployed(adjective, idle, sluggish, lazy) |
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| APA | Smart Define. (2016). sleepy thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/sleepy/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "sleepy thesaurus" https://smartdefine.org/sleepy/thesaurus/synonyms (accessed September 28, 2026). |
| Harvard | Smart Define 2016, sleepy thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/sleepy/thesaurus/synonyms>. |
| MLA | Smart Define. "sleepy thesaurus" 18 February 2016. Web. 28 September 2026. <https://smartdefine.org/sleepy/thesaurus/synonyms> |