KO
addle
anesthetize
bedaze
befuddle
bemuse
benumb
blunt
chloroform
coldcock
deaden
desensitize
dope
drug
dull
etherize
freeze
inebriate
infatuate
intoxicate
kayo
knock out
knock senseless
knock stiff
knock unconscious
lay out
narcotize
numb
obtund
palsy
paralyze
put to sleep
stellify
stun
stupefy
desensitise
besots
besotted
besotting