Found 2 items, similar to somniferous.
English → English (WordNet) Definition: somniferous somniferous adj : sleep inducing [syn: soporific, soporiferous, somnific, hypnogogic, hypnagogic]
English → English (gcide) Definition: Somniferous Somniferous \Som*nif"er*ous\, a. [L. somnifer; somnus sleep + ferre to bring.] Causing or inducing sleep; soporific; dormitive; as, a somniferous potion. --Walton. [1913 Webster]