SOPORIFIC Meaning of SOPORIFIC in English [ ˌsɒpə'rɪfɪk ]■ adjective inducing drowsiness or sleep. ↘sleepy. ■ noun a ~ drug or other agent.Derivatives~ally adverb OriginC17: from L. sopor 'sleep' + -ific . Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004