Synonyms for Supporter:

n.

ideologue, exponent. fanatic, lover, evangelist, man. cup, shin guard, kit, shin pad, box, leotard, jersey. admirer (noun)
lover.
advocate (noun)
booster, abettor, ally, study at follower, confederate, upholder, exponent, subscriber, patron, sustainer.
assistant (noun)
helper, abettor.
benefactor (noun)
mentor, savior, friend in need, samaritan, Donator, contributor, protector, benefactor, grantor, helper, alms-giver, sponsor, Aider, Good Samaritan, guarantor, provider, donor, patroness.
confederate (noun)
abettor, ally, associate, colleague, accomplice, assistant.
enthusiast (noun)
buff, nut, fancier, addict, zealot, devotee, aficionado, fan, freak, patron, connoisseur, fiend, enthusiast.
mainstay (noun)
sustainer.
supporter (noun)
booster, helper, protagonist, champion, admirer, sponsor, assistant, garter, help, friend, patron.

Other synonyms:

evangelist. man. champion
champion.
contributor
subscriber.

Usage examples for supporter

  1. It would seem that Zeno himself, as a supporter of Parmenides, drew the last of these three possible deductions, at any rate in regard to time. – Our Knowledge of the External World as a Field for Scientific Method in Philosophy by Bertrand Russell
  2. His enemies would rely on his reputation as a supporter of law and order to make his warfare a warfare within the law, and that would also lull them into expecting only formal and preparatory fencing at the hearing of next Wednesday. – The Portal of Dreams by Charles Neville Buck
  3. Jerry had lost his bet, as indeed he usually did, but for all that he remained a consistent supporter of the losing side. – The Dew of Their Youth by S. R. Crockett