somnific

[som-nif-ik, suh m-]
See more synonyms for somnific on Thesaurus.com

Origin of somnific

1715–25; < Latin somnificus causing sleep, equivalent to somni-, combining form of somnus sleep + -ficus -fic
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018