Synonyms of fanatic


1. fanatic, fiend, enthusiast, partisan, partizan

usage: 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


1. fanatic, fanatical, overzealous, rabid, passionate (vs. passionless)

usage: marked by excessive enthusiasm for and intense devotion to a cause or idea; "rabid isolationist"

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Definition and meaning of fanatic (Dictionary)