ataractic

at·a·rac·tic  (t-rktk) also at·a·rax·ic (-rksk)

adj.

Of or relating to a drug or other agent that has a tranquilizing effect.

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[From Greek ataraktos, undisturbed : a-, not; see a-¹ + taraktos, disturbed (from tarassein, tarak-, to disturb).]

Thesaurus

Noun	1.	ataractic - a drug used to reduce stress or tension without reducing mental clarity antianxiety agent, ataractic agent, ataractic drug, tranquilizer, tranquilliser, tranquillizer antipsychotic, antipsychotic agent, antipsychotic drug, major tranquilizer, major tranquilliser, major tranquillizer, neuroleptic, neuroleptic agent, neuroleptic drug - tranquilizer used to treat psychotic conditions when a calming effect is desired antianxiety drug, anxiolytic, anxiolytic drug, minor tranquilizer, minor tranquilliser, minor tranquillizer - a tranquilizer used to relieve anxiety and reduce tension and irritability psychotropic agent - a chemical substance that can influence human consciousness sedative-hypnotic, sedative-hypnotic drug - a sedative that depresses activity of the central nervous system and reduces anxiety and induces sleep
Adj.	1.	ataractic - tending to soothe or tranquilize; "valium has a tranquilizing effect"; "took a hot drink with sedative properties before going to bed" ataraxic, sedative, tranquilising, tranquilizing, tranquillising, tranquillizing depressant - capable of depressing physiological or psychological activity or response by a chemical agent