Synonyms for resister

obstructor, staller, obstructionist, saboteur, opponent, adversary, activist, antagonist, opposition, die-hard, bitter-ender, last-ditcher, objector, conscientious objector, CO, passive resister, noncooperator, dissenter, disputer, contender, militant, guerrilla, combatant, wet blanket, damper, spoilsport, killjoy.