amaze
     v 1: affect with wonder; "Your ability to speak six languages
          amazes me!" [syn: {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}, {dumbfound}]
Source: WordNet® 2.0