major tranquillizer
['major tranquilizer', 'major tranquilliser', 'antipsychotic drug', 'antipsychotic agent', 'antipsychotic', 'neuroleptic drug', 'neuroleptic agent', 'neuroleptic', 'tranquilizer ', 'tranquillizer ', 'tranquilliser ', 'antianxiety agent ', 'ataractic drug ', 'ataractic agent ', 'ataractic ']