Major tranquilliser Major tranquilliser antonyms If you know antonyms for Major tranquilliser, then you can share it. Suggest antonym for Major tranquilliser Major tranquilliser synonyms antipsychotic neuroleptic major tranquillizer antipsychotic agent antipsychotic drug neuroleptic drug neuroleptic agent major tranquilizer antianxiety agent ataractic ataractic agent Full list of synonyms (15)