stupefy in WordNet English dictionary

1. be a mystery or bewildering to
   "This beats me!"; "Got me--I don't know the answer!"; "a vexing problem"; "This question really stuck me"
   perplex  vex  stick  get  puzzle  mystify  baffle  beat  pose  bewilder  flummox  stupefy  nonplus  gravel  amaze  dumbfound 
   
2. make dull or stupid or muddle with drunkenness or infatuation
   besot  stupefy 
   
3. make senseless or dizzy by or as if by a blow
   "stun fish"
   stun  stupefy