1. Disappointingly unsuccessful
   "many frustrated poets end as pipe-smoking teachers"
   - defeated, disappointed, discomfited, foiled, thwarted

1. Hinder or prevent (the efforts, plans, or desires) of
   "What ultimately frustrated every challenger was Ruth's amazing September surge"
   - thwart, queer, spoil, scotch, foil, cross, baffle, bilk 
2. Treat cruelly
   - torment, rag, bedevil, crucify, dun

See also: frustration, frustrative, unsuccessful

Type of: beset, chevvy [non-standard], chevy, chivvy, chivy, forbid, foreclose, forestall, harass, harry, hassle, molest, plague, preclude, prevent, provoke

Encyclopedia: Frustrated

• billow
• billowing
• billowy
• billy
• billy buttons
• billy club
• billy goat
• Billy Graham
• Billy Mitchell
• Billy Sunday
• Billy Wilder
• billy-ho
• billycan
• billyo
• billyoh
• billystick
• bilobate
• bilobated
• bilobed
• bilocation
• bilocular
• bilocular capsule
• biloculate
• Biloxi
• bilsted