A moralist is someone who has strong ideas about right and wrong behaviour, and who tries to make other people behave according to these ideas.
moralist in British English
(ˈmɒrəlɪst)
noun
1.
a person who seeks to regulate the morals of others or to imbue others with a sense of morality
2.
a person who lives in accordance with moral principles
3.
a philosopher who is concerned with casuistic discussions of right action, or who seeks a general characterization of right action, often contrasted with a moral philosopher whose concern is with general philosophical questions about ethics
Derived forms
moralistic (ˌmoralˈistic)
adjective
moralistically (ˌmoralˈistically)
adverb
moralist in American English
(ˈmɔrəlɪst; ˈmɑrəlɪst)
noun
1.
a teacher of or writer on morals; person who moralizes
2.
a person who adheres to a system of moralism
3.
a person who seeks to impose personal morals on others
Examples of 'moralist' in a sentence
moralist
Upshire was no moralist, facts were his business, and the apprehension of criminals his bread-and-butter.
Meek, M R D A WORM OF DOUBT (2001)
Mind you, he won't have any truck with the movement these days. He's what you might call a moralist.
Higgins, Jack CONFESSIONAL (2001)
Again and again Dinitak revealed himself as the ferocious moralist that he was.