fanatic

1 a person with a strong and habitual liking for something football fanatics are pretty much booked up for weekends from Labor Day to Super Bowl Sunday Synonyms addict, aficionado (also afficionado), buff, bug, devotee, enthusiast, fan, fancier, fiend, fool, freak, habitué (also habitue), head, hound, junkie (also junky), lover, maniac, maven (also mavin), nut, suckerRelated Words groupie; admirer, amateur, collector, connoisseur, dilettante; authority, expert; adherent, convert, cultist, disciple, follower, hanger-on, votary; advocate, apostle, backer, champion, evangelist, exponent, friend, patron, promoter, proponent, supporter; partisan (also partizan), zealot; booster, rooter, well-wisher; faddistNear Antonyms nonadmirer; belittler, carper, critic, detractorAntonyms nonfan

2 one who is intensely or excessively devoted to a cause the vandalism was blamed on fanatics within the environmental movement Synonyms crusader, zealot, ideologue (also idealogue), militant, partisan (also partizan), red hot, true believerRelated Words activist; dreamer, idealist, visionary; cultist, disciple, follower, hanger-on, idolizer, votary; addict, aficionado (also afficionado), buff, bug, devotee, enthusiast, fan, fancier, fiend, fool, freak, habitué (also habitue), head, hound, junkie (also junky), lover, maniac, maven (also mavin), nut, sucker; advocate, apostle, backer, champion, evangelist, patron, promoter, stalwart, supporter; booster, rooter, well-wisher; faddistNear Antonyms dabbler, dilettanteAntonyms nonmilitant