What's a politically neutral word for having only one permitted set of beliefs?

I'm looking for a word where people are critical of an opposing idea, usually without examining it, simply because it's different from what people already believe.

I thought that fascist (of or relating to fascism) was the word I was looking for, but Wiktionary defines fascism as:

Noun

fascism (usually uncountable, plural fascisms)

  1. Any right-wing, authoritarian, nationalist ideology characterized by centralized, totalitarian governance, strong regimentation of the economy and of society, and repression of criticism or opposition.

The only part of the meaning I want is "repression of criticism or opposition", without the political implications of the remainder of the meaning.

To refuse to admit the possibility that contrary ideas could be valid is ___.

The oppression of people who believe differently is ___.

It doesn't necessarily have to be an adjective; a noun would probably be workable too.


You could use

closed-minded

not willing to consider different ideas or opinions : having or showing a closed mind