Any of a group of drugs, such as the benzodiazepines, that are used to treat anxiety without causing excessive sedation. Also called anxiolytic drug Also called minor tranquilizer抗焦虑药，抗忧郁剂：一类药剂中任一种，如苯二氮，用于治疗焦虑并且不会有过度的镇静剂作用 也作 anxiolytic drug 也作 minor tranquilizer