Как по Английски будет 狂信的

adjective

Obstinately or unreasonably attached to a belief, opinion, or faction, in particular prejudiced against or antagonistic towards a person or people on the basis of their membership of a particular group.

Примеры использования:

They're pandering to a vocal minority of ill-informed and bigoted individuals

noun

A person filled with excessive and single-minded zeal, especially for an extreme religious or political cause.

Примеры использования:

Religious fanatics

adjective

Filled with or expressing excessive zeal.

Примеры использования:

His eyes had a fanatic iciness

adjective

Filled with excessive and single-minded zeal.

Примеры использования:

Fanatical revolutionaries