148 entries under dull topic. ×
| draggy(adjective, quiet, low, slow) | |
| flagging(adjective, beat, slow, careless) | |
| immobile(adjective, still, idle, sluggish) | |
| laggard(adjective, quiet, easy, careless) | |
| low(late, behind) | |
| static(adjective, quiet, flat, indifferent) | |
| stretchy(adjective, stupid, idle, weary) | |
| tame(late, insensibility, behind) | |
| tedious(late, behind) | |
| uneventful(late, behind) | |
| dilatory(adjective, quiet, moderate, easy) | |
| abeyant(adjective, idle, sluggish, lazy) | |
| asleep on the job(expression, idiom, idle, sluggish) | |
| besotted | |
| boorish | |
| careless(idle, sluggish, inactive, lethargic) | |
| cloddish | |
| dallying(idle, sluggish, inactive, lethargic) | |
| dense | |
| dim |
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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> |