nonplus
['perplex', 'vex', 'stick', 'get', 'puzzle', 'mystify', 'baffle', 'beat', 'pose', 'bewilder', 'flummox', 'stupefy', 'gravel', 'amaze', 'dumbfound', 'confuse ', 'throw ', 'fox ', 'befuddle ', 'fuddle ', 'bedevil ', 'confound ', 'discombobulate ', 'puzzle over ', 'puzzle out ']