abolish censor conceal contain cover up crack down on crush curb cut off muzzle overcome overthrow put an end to put down quash quell quench repress silence snuff out stamp out stifle subdue withhold annihilate bottle burke check clamp conquer extinguish interrupt muffle overpower shush smother spike squash stop trample beat down bring to naught hold back hold down hold in keep in keep secret put kibosh on put lid on sit on