gospeler

a person who actively supports or favors a cause Horatio Alger is remembered as the great gospeler of the American success story Synonyms advocate, advocator, apostle, backer, booster, champion, expounder, espouser, friend, exponent (or gospeller), herald, hierophant, high priest, paladin, promoter, proponent, protagonist, supporter, true believer, tub-thumper, white knightRelated Words loyalist, partisan (also partizan), stalwart; adherent, cohort, disciple, follower; interpreter; applauder, cheerleader, encourager, fellow travelerNear Antonyms enemy, foe, rival; belittler, critic, faultfinderAntonyms adversary, antagonist, opponent