Verb

1. besot, stupefy, desensitize, desensitise

usage: make dull or stupid or muddle with drunkenness or infatuation

2. perplex, vex, stick, get, puzzle, mystify, baffle, beat, pose, bewilder, flummox, stupefy, nonplus, gravel, amaze, dumbfound, confuse, throw, fox, befuddle, fuddle, bedevil, confound, discombobulate

usage: 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"

3. stun, stupefy, immobilize, immobilise

usage: make senseless or dizzy by or as if by a blow; "stun fish"

See also: stupefy (Dictionary)