Synonyms|87Antonyms|16|Broader|0Narrower|0Related|49

7 entries under dull topic. ×

14
soporific(adjective, quiet, heavy, inactivity)
8
hypnotic(adjective, quiet, dark, heavy)
7
narcotic(noun, adjective, quiet, slow)
7
somnifacient(noun, adjective, quiet, dark)
6
opiate(noun, adjective, quiet, slow)
6
somnolent(adjective, quiet, dark, heavy)
3
sedative(noun, adjective, quiet, slow)
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APASmart Define. (2015). somniferous thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/somniferous/thesaurus/synonyms
ChicagoSmart Define. 2015. "somniferous thesaurus" https://smartdefine.org/somniferous/thesaurus/synonyms (accessed September 29, 2026).
HarvardSmart Define 2015, somniferous thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/somniferous/thesaurus/synonyms>.
MLASmart Define. "somniferous thesaurus" 14 April 2015. Web. 29 September 2026. <https://smartdefine.org/somniferous/thesaurus/synonyms>