a drug that reduces excitability and calms a person

[ Syn: sedative drug , sedative drug , depressant , depressant , downer , downer ]

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

[ Syn: ataractic , ataraxic , tranquilizing , tranquillizing , tranquilising , tranquillising ]