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1. Harass persistently in cruel or annoying way
   - torment, rag, crucify, dun, frustrate
    
2. Confuse or leave at a loss because of something complex or difficult to understand
   "These questions bedevil even the experts";
   - confuse, throw, fox, befuddle, fuddle, confound, discombobulate [informal], perplex, vex, stick, get, puzzle, mystify, baffle, beat, pose, bewilder, flummox, stupefy, nonplus, gravel, dumbfound

Derived forms: bedevilling, bedevilled, bedevils, bedeviling, bedeviled

Type of: be, beset, chevvy [non-standard], chevy, chivvy, chivy, harass, harry, hassle [informal], molest, plague, provoke

Encyclopedia: Bedevil