KO, Pentothal, anesthetize, annihilate, bedaze, benumb, bereave of life, besot, blunt, carry away, carry off, cocaine, coldcock, cut down, cut off, deaden, deprive of life, desensitize, destroy, dispatch, dispose of, do away with, do for, do to death, dope, drug, dull, end, ether, etherize, ethyl chloride, ethylene, execute, exterminate, finish, finish off, freeze, gas, immolate, kayo, kill, knock out, knock senseless, knock stiff, knock unconscious, launch into eternity, lay out, liquidate, lynch, make away with, martyr, martyrize, menthol, narcotize, nitrous oxide, numb, obtund, palsy, paralyze, poison, purge, put away, put down, put to death, put to sleep, remove from life, sacrifice, slay, starve, stun, stupefy, take life, take off