WordWeb Online

1. Be confusing or perplexing to; cause to be unable to think clearly
   "These questions confound even the experts";
   - confuse, throw, fox, befuddle, fuddle, bedevil, discombobulate, perplex, vex, stick, get, puzzle, mystify, baffle, beat, pose, bewilder, flummox, stupefy, nonplus, gravel, dumbfound
    
2. Mistake one thing for another
   - confuse

Derived forms: confounds, confounded, confounding

Type of: be, misidentify, mistake

Encyclopedia: Confound