frustrate (
http://definr.com/frustrate)
v 1: hinder or prevent (the efforts, plans, or desires) of; "What
ultimately frustrated every challenger was Ruth's
amazing September surge"; "foil your opponent" [syn:
thwart,
queer,
spoil,
scotch,
foil,
cross,
baffle,
bilk]
2: annoy constantly [syn:
torment,
rag,
bedevil,
crucify,
dun]
3: hinder or prevent (the efforts, plans, or desires) of [syn:
spoil,
thwart]