Having an extreme, irrational zeal or enthusiasm for a specific cause.

In a fanatical manner; with extreme, irrational zeal or enthusiasm.

Fanatical. / (obsolete) Showing evidence of possession by a god or demon; frenzied, overzealous.

A person who is zealously enthusiastic for some cause, especially in religion.

plural of fanatic

(archaic) excessive intolerance of opposing views

plural of non-fanatic

Alternative form of nonfanatic

Alternative form of nonfanatic

fanaticism