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