- ataractic, ataraxic, sedative, tranquilizing, tranquilising - tending to soothe or tranquilize; "valium has a tranquilizing effect"; "took a hot drink with sedative properties before going to bed"
Antonym: stimulative (indirect, via depressant)
- tranquilizer, tranquillizer, tranquilliser, antianxiety agent, ataractic drug, ataractic agent, ataractic - a drug used to reduce stress or tension without reducing mental clarity
--1 is a kind of psychotropic agent; sedative-hypnotic, sedative-hypnotic drug
--1 has particulars: