1. (

• sedative ,
• sedative_drug ,
• depressant ,
• downer

) a drug that reduces excitability and calms a person ;

1. (

• ataractic ,
• ataraxic ,
• sedative ,
• tranquilizing ,
• tranquillizing ,
• tranquilising ,
• tranquillising

) tending to soothe or tranquilize; "valium has a tranquilizing effect"; "took a hot drink with sedative properties before going to bed" ;