- Definitions|2
- Thesaurus|152
- Abbreviations|0
| sluggish | |
| soothing | |
| tranquilizing | |
| wearying | |
| causing sleep(expression, idiom) | |
| clandestineness(dark, confidence, sedative) | |
| confidence(dark, sedative) | |
| confidentiality(dark, confidence, sedative, somnifacient) | |
| covertness(dark, confidence, sedative) | |
| darkness(dark, confidence, sedative) | |
| devoid | |
| devoid of interest(expression, idiom, weariness) | |
| furtiveness(dark, confidence, sedative) | |
| heavy with sleep(expression, idiom, inactivity) | |
| hiding(dark, confidence, sedative) | |
| hush(dark, confidence, sedative) | |
| inducing sleep(expression, idiom) | |
| isolation(dark, confidence, sedative) | |
| lethargical | |
| mesmeric |
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| APA | Smart Define. (2015). somniferous thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/somniferous/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "somniferous thesaurus" https://smartdefine.org/somniferous/thesaurus/synonyms (accessed September 28, 2026). |
| Harvard | Smart Define 2015, somniferous thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/somniferous/thesaurus/synonyms>. |
| MLA | Smart Define. "somniferous thesaurus" 14 April 2015. Web. 28 September 2026. <https://smartdefine.org/somniferous/thesaurus/synonyms> |