oppress, suppress, crush -- (come down on or keep down by unjust use of one's authority; "The government oppresses political activists")
squash, crush, squelch, mash, squeeze -- (to compress with violence, out of natural shape or condition; "crush an aluminum can"; "squeeze a lemon")
beat, beat out, crush, shell, trounce, vanquish -- (come out better in a competition, race, or conflict; "Agassi beat Becker in the tennis championship"; "We beat the competition"; "Harvard defeated Yale in the last football game")
crush -- (break into small pieces; "The car crushed the toy")
crush, smash, demolish -- (humiliate or depress completely; "She was crushed by his refusal of her invitation"; "The death of her son smashed her")