Frustrate1. (a.) Vain; ineffectual; useless; unprofitable; null; void; nugatory; of no effect.
2. (v. t.) To bring to nothing; to prevent from attaining a purpose; to disappoint; to defeat; to baffle; as, to frustrate a plan, design, or attempt; to frustrate the will or purpose.
3. (v. t.) To make null; to nullify; to render invalid or of no effect; as, to frustrate a conveyance or deed.
Thesaurus Entries
annul, anticipate, arrest, baffle, balk, bar, beat, bilk, blast, block, brave, bring to nothing, buffalo, buffer, cancel, cancel out, cast down, challenge, check, checkmate, circumvent, come to nothing, confound, confront, conquer, contravene, counter, counteract, counterbalance, countermand, counterwork, cripple, cross, dash, deceive, defeat, defeat expectation, defy, destroy, disappoint, discomfit, disconcert, discountenance, discourage, dish, disillusion, disrupt, dissatisfy, elude, evade, exasperate, flummox, foil, forbid, forestall, get around, get round, give the runaround, give the slip, go one better, halt, hamper, hamstring, hinder, impede, inhibit, interrupt, invalidate, knock the chocks, let down, lick, negate, negativate, negative, neutralize, nonplus, nullify, obstruct, obviate, offset, outfigure, outflank, outgeneral, outguess, outmaneuver, outplay, outreach, outsmart, outwit, overcome, overreach, pass the buck, perplex, preclude, prevent, prohibit, redress, repel, repulse, ruin, sabotage, scotch, spike, spoil, stonewall, stop, stultify, stump, stymie, tantalize, tease, thwart, undo, upset, victimize, vitiate, void