frustrate
— Verb
– English
~ hinder or prevent (the efforts, plans, or desires) of; "What ultimately frustrated every challenger was Ruth's amazing September surge"; "foil your opponent"
frustrate
— Verb
– English
~ treat cruelly; "The children tormented the stuttering teacher"
frustrated
— Adjective
– English
~ disappointingly unsuccessful; "disappointed expectations and thwarted ambitions"; "their foiled attempt to capture Calais"; "many frustrated poets end as pipe-smoking teachers"; "his best efforts were thwarted"