partisan

[1]	partizan , zealot , drumbeater , devotee , follower , supporter , adherent , backer , champion , enthusiast , fan , zealot , fanatic , (Mainly US/Canadian) booster , (Colloq) (US) rooter
[2]	guerrilla/guerilla , enthusiast , partizan , freedom fighter , underground/resistance fighter , irregular
[3]	partizan

adj.

[1]	one-sided , factional , biased , tendentious , sectarian , opinionated , partial , bigoted , prejudiced , parochial , myopic , short-sighted , near-sighted , narrow , narrow-minded , limited
[2]	guerrilla/guerilla , partizan , freedom , underground , resistance , irregular