WordWeb Online

1. Confuse or leave at a loss because of something complex or difficult to understand
   "These questions confound even the experts";
   - confuse, throw, fox, befuddle, fuddle, bedevil, discombobulate [informal], perplex, vex, stick, get, puzzle, mystify, baffle, beat, pose, bewilder, flummox, stupefy, nonplus, gravel, dumbfound
    
2. Mistake one thing for another
   - confuse

Derived forms: confounded, confounding, confounds

Type of: be, misidentify, mistake

Encyclopedia: Confound