The Oxford Thesaurus An A-Z Dictionary of Synonyms - bumpn.

1) blow, collision, thud, hit, knock, buffet, clunk, whack: That bump on the head seems to have affected him. 2) lump, protuberance, welt, swelling, tumescence, knob, bulge: How did you get that bump on your forehead? --v. 3) knock (against) , strike, hit, collide (with) , run into, ram; smash, crash, Colloq wallop: I bumped into the car in front as I was parking. 4) bump into. meet, encounter, run into or across, come across, stumble over: I bumped into Philippa at the hairdresser's. 5) bump off. murder, kill, put away, assassinate, do away with, execute, liquidate, dispatch or despatch, Slang take for a ride, destroy, eliminate, rub out, wipe out, do in, US waste, ice: They bumped off Wimpy, boss; he was pulled out of the river wearing concrete overshoes.