narrow-minded

adjectives

capable of being shocked
lacking tolerance or flexibility or breadth of view
"a brilliant but narrow-minded judge"; "narrow opinions"
is derived from
antonym
rigidly adhering to a particular sect or its doctrines
is derived from
is similar to
belonging to or characteristic of a sect
"a sectarian mind"; "the negations of sectarian ideology"- Sidney Hook; "sectarian squabbles in psychology"