Synonyms and related words :
KO, anesthetize, bedaze, benumb, besot, blunt, chloroform, coldcock, deaden, dope, drug, dull, etherize, freeze, hebetate, kayo, knock out, knock senseless, knock stiff, knock unconscious, lay out, mull, narcotize, numb, obtund, palsy, paralyze, put to sleep, stun, stupefy