1) Antianxiety drug 2) Anxiolytic 3) Anxiolytic drug 4) Minor tranquilizer 5) Minor tranquilliser 6) Minor tranquillizer 7) Perphenazine Found on https://www.crosswordclues.com/clue/triavil
(tri´ah-vil) trademark for a preparation of perphenazine (an antidepressant) and amitriptyline hydrochloride (an antianxiety agent); used in treatment of depression accompanied by anxiety or agitation. Found on http://www.encyclo.co.uk/local/21001