1. A drug used to reduce stress or tension without reducing mental clarity
   "The veterinarian administered a mild tranquilizer to calm the anxious dog";
   - tranquillizer, tranquilliser [Brit], antianxiety agent, ataractic drug, ataractic agent, ataractic, trank [informal]

Derived forms: tranquilizers

Type of: psychotropic, psychotropic agent, psychotropic drug, sedative-hypnotic, sedative-hypnotic drug

Encyclopedia: Tranquilizer