WordWeb Online

1. Confuse or leave at a loss because of something complex or difficult to understand
   "These questions bewilder even the experts";
   - confuse, throw, fox, befuddle, fuddle, bedevil, confound, discombobulate [informal], perplex, vex, stick, get, puzzle, mystify, baffle, beat, pose, flummox, stupefy, nonplus, gravel, dumbfound
    
2. Cause to be confused emotionally
   "This play will delight and bewilder you with its nimble humour";
   - bemuse, discombobulate [informal], throw

Derived forms: bewilders, bewildering, bewildered

Type of: be, discomfit, discompose, disconcert, untune, upset