stupefy

Verb

• make senseless or dizzy by or as if by a blow
  • stun fish
    

• 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
    

• make dull or stupid or muddle with drunkenness or infatuation

Related words

• Synonyms: 
  stun , perplex , vex , stick , get , puzzle , mystify , baffle , beat , pose , bewilder , besot