One who practices moral duties; a person who lives in conformity with moral rules; one of correct deportment and dealings with his fellow-creatures; sometimes used in contradistinction to one whose life is controlled by religious motives
disapproval If you describe someone or something as moralistic, you are critical of them for making harsh judgments of other people on the basis of their own ideas about what is right and wrong. He has become more moralistic = judgmental. with very strong beliefs about what is right and wrong, especially when this makes you judge other people's behaviour