- Definitions|2
- Thesaurus|206
- Abbreviations|0
| sleepiness(noun, tiredness, torpor) | |
| drowsiness(noun, inactivity, fatigue, tiredness, sleepiness) | |
| lethargy(noun, inactivity, daze, slumber, torpor) | |
| torpor(noun, inactivity, lethargy, daze, slumber) | |
| stupor(noun, inactivity, lethargy, daze, torpor) | |
| doziness | |
| dullness(noun, inactivity, lethargy, daze, slumber) | |
| fatigue(noun, tiredness, sleepiness) | |
| inactivity(noun, stop, calm, break, quiet) | |
| languor(noun, inactivity, lethargy, daze, slumber) | |
| lifelessness(noun, calm, stillness, immobility) | |
| slowness(noun, inactivity) | |
| sluggishness(noun, inactivity) | |
| somnolency | |
| apathy(noun, lethargy, daze, slumber, torpor) | |
| listlessness | |
| passivity | |
| sloth | |
| slothfulness | |
| stupefaction(noun, lethargy, daze, coma, torpor) |
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| APA | Smart Define. (2015). somnolence thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/somnolence/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "somnolence thesaurus" https://smartdefine.org/somnolence/thesaurus/synonyms (accessed September 22, 2026). |
| Harvard | Smart Define 2015, somnolence thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/somnolence/thesaurus/synonyms>. |
| MLA | Smart Define. "somnolence thesaurus" 10 April 2015. Web. 22 September 2026. <https://smartdefine.org/somnolence/thesaurus/synonyms> |