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: bedeviled, bedeviling, bedevils, bedevilled, bedevilling

Type of: affect, bear on, bear upon, beset, chevvy [non-standard], chevy [Brit, archaic], chivvy [Brit], chivy [Brit], harass, harry, hassle [informal], impact, molest, plague, provoke

Encyclopedia: Bedevil