The Oxford Thesaurus An A-Z Dictionary of Synonyms - sedativen.

1) narcotic, tranquillizer, opiate, sleeping-pill, soporific, calmative, anodyne, depressant, hypnotic, barbiturate, lenitive, Colloq downer, knock-out drop, Slang Mickey (Finn) : The doctor has given him a sedative and he should sleep now. --adj. 2) narcotic, tranquillizing, relaxing, soothing, calming, allaying, opiate, soporific, sleep-inducing, calmative, anodyne, lenitive, depressing, hypnotic: I found that listening to a recording of surf splashing on a beach has a sedative effect.