frustrate

Verb

• hinder or prevent (the efforts, plans, or desires) of
  • "What ultimately frustrated every challenger was Ruth's amazing September surge"
• treat cruelly
• To disappoint or defeat; to vex by depriving of something expected or desired.
• To hinder or thwart.
• To cause stress or annoyance.

Adj

• ineffectual; useless; fruitless.

Examples

• It frustrates me to do all this work and then lose it all.
• My clumsy fingers frustrate my typing efforts.
• This test frustrates me because if I fail, it'll destroy my grade.

Synonyms

baffle, bedevil, bilk, cross, crucify, dun, foil, queer, rag, scotch, spoil, thwart, torment, Idioms:, aggravate, annoy, antagonize, behedge, blunt, boil someone's piss, bother, botherate, bug, burn up, chap someone's hide, cheese off, confound, delay, devil, difficult, diminish, disgruntle, exasperate, forestay, forslow, frustrate, get, get in the way, get on someone's nerves, get on someone's tits, get on someone's wick, get someone's Irish up, get someone's back up, get someone's dander up, get someone's goat, get someone's nanny, get someone's nanny-goat, get under one's goat, get up, give someone the shits, grate, grind one's gears, grotch, hack off, hamper, handicap, harsh one's mellow, hassle, hinder, hold up, hurt, impair, impede, incommode, interfere, intervene, irk, irritate, jazz, lessen, let, mar, molest, mommick, nark, obstruct, overslaugh, pee off, peeve, persecute, pique, piss off, preclude, prevene, prevent, prohibit, provoke, put someone's back up, raise someone's hackles, rankle, reduce, restrict, retard, rile, rile up, roil, rub someone the wrong way, rub up the wrong way, ruffle, ruffle someone's feathers, slow down, stay, sting, storm, tee off, test someone's patience, thwarten, tick off, torque off, trouble, try one's patience, umbeset, undermine, vex, weaken, wind up, worsen