WordWeb Online

1. Full of difficulty, confusion or bewilderment
   "perplexed language"; "perplexed state of the world"
    
2. Filled with bewilderment
   - at a loss, nonplused [US], nonplussed, puzzled, thrown

1. Confuse or leave at a loss because of something complex or difficult to understand
   "These questions perplex even the experts";
   - confuse, throw, fox, befuddle, fuddle, bedevil, confound, discombobulate [informal], vex, stick, get, puzzle, mystify, baffle, beat, pose, bewilder, flummox, stupefy, nonplus, gravel, dumbfound
    
2. Make more complicated
   "There was a new development that perplexed the matter";
   - complicate

See also: at sea, baffled, befuddled, bemused, bewildered, confounded, confused, fuddled, lost, mazed, metagrabolised, metagrabolized, metagrobolised [Brit], metagrobolized, mixed-up, mystified, questioning, quizzical, stuck

Type of: alter, be, change, modify

Antonym: simplify, unperplexed

Encyclopedia: Perplex