fanatic, fiend -- (a person motivated by irrational enthusiasm (as for a cause); "A fanatic is one who can't change his mind and won't change the subject"--Winston Churchill)
Overview of adj fanatic
The adj fanatic has 1 sense
fanatic, fanatical, overzealous, rabid -- (marked by excessive enthusiasm for and intense devotion to a cause or idea; "rabid isolationist")
(Sound)
