Synonyms and related words :
activist, ball of fire, beaver, big-time operator, bustler, busy bee, charge, doer, dynamo, eager beaver, electric charge, enthusiast, go-getter, human dynamo, hustler, man of action, man of deeds, militant, new broom, operator, peeler, political activist, powerhouse, rustler, self-starter, take-charge guy, unit quantity, wheeler-dealer, winner