conformist

nouns

someone who conforms to established standards of conduct (especially in religious matters)
is derived from
is derived from
antonym
domain category
a strong belief in a supernatural power or powers that control human destiny
"he lost his faith but not his morality"
is a type of (narrower)
a person who is reluctant to accept changes and new ideas

adjectives

marked by convention and conformity to customs or rules or styles
"underneath the radical image teenagers are surprisingly conformist"
antonym
adhering to established customs or doctrines (especially in religion)