sedative drug sedative • sedative-hypnotic · · · Info · Definitions · Synonyms · Characters · · sedative drug · · Text Common · · Latin · · Scripts 13 · · Length 4 · · Syllables Definitions · · · (noun) a drug that reduces excitability and calms a person. Synonyms: sedative, sedative drug, depressant, downer. · · Noun Definition 1 Synonyms · · · sedative · · Synonym 1 depressant · · Synonym 2 downer · · Synonym 3 Characters · · space U+0020 a latin small letter a U+0061 d latin small letter d U+0064 e latin small letter e U+0065 g latin small letter g U+0067 i latin small letter i U+0069 r latin small letter r U+0072 s latin small letter s U+0073 t latin small letter t U+0074 u latin small letter u U+0075 v latin small letter v U+0076