From WordNet (r) 3.0 (2006):
amaze
v 1: affect with wonder; "Your ability to speak six languages
amazes me!" [syn: amaze, astonish, astound]
2: 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" [syn: perplex, vex, stick, get,
puzzle, mystify, baffle, beat, pose, bewilder,
flummox, stupefy, nonplus, gravel, amaze,
dumbfound]