[v] be a mystery or bewildering to; "This beats me!"; "Got me--I don't know the answer!"; "a vexing problem"
amaze, baffle, beat, bewilder, dumbfound, flummox, get, gravel, mystify, perplex, pose, puzzle, stupefy, vex
abecedarian, addle, amaze, answer, answer conclusively, argue down, astonish, astound, baffle, bafflement, balk, bamboozle, beat, bewilderment, blast, boggle, bother, brave, bring up short, buffalo, challenge, check, checkmate, circumvent, confound, confo