WordWeb Online

1. Filled with bewilderment
   "puzzled that she left without saying goodbye";
   - at a loss, nonplused [US], nonplussed, thrown, perplexed

1. Confuse or leave at a loss because of something complex or difficult to understand
   "These questions puzzle even the experts";
   - confuse, throw, fox, befuddle, fuddle, bedevil, confound, discombobulate [informal], perplex, vex, stick, get, mystify, baffle, beat, pose, bewilder, flummox, stupefy, nonplus, gravel, dumbfound
    
2. Be uncertain about; think about without fully understanding or being able to decide
   "We puzzled over her sudden departure"

See also: perplexed

Type of: be, chew over, contemplate, excogitate, meditate, mull, mull over, muse, ponder, reflect, ruminate, speculate, think over

Encyclopedia: Puzzled