sectarian

nouns

a member of a sect
"most sectarians are intolerant of the views of any other sect"

adjectives

of or relating to or characteristic of a sect or sects
"sectarian differences"
is derived from
pertains to
belonging to or characteristic of a sect
"a sectarian mind"; "the negations of sectarian ideology"- Sidney Hook; "sectarian squabbles in psychology"
is derived from
antonym
is similar to
adhering or confined to a particular sect or denomination
"denominational prejudice"
is similar to
rigidly adhering to a particular sect or its doctrines