Synonyms of frustrate

1 Syllable
halt, crimp, beat, stump, bar, block, lick, cramp, balk, bilk, ruin, check, thwart, shunt, dash, foil, inc
2 Syllables
thwarted, trammel, counters, annul, tabooed, bilking, outwit, arrest, stymie, foiled, deadens, staving, hinder, re-press, halted, prevent, deaden, nonplus, bitted, avert, staved, conquer, shunting, hinders, bitting, blighted, shunted, confront, defeat, thwarting, flurried, obstruct, baffle, bilked, hog-tie, stave, depress, counter, forbid, conquers, trammels, warded, warding, hogtied, hog-tied, cancel
3 Syllables
preventing, dishearten, stoppering, conquered, nonplused, eluded, intermit, displease, disconcert, redressed, confuse, averting, hindered, trammeled, sandbagged, preclude, obviate, negate, averted, hampered, hampering, hindering, sandbagging, eluding, impede, countercheck, countered, counterwork, countering, obstructed, checkmated, elude, deadening, checkmate, nonplussed, forestall, negating, inhibit, checkmating, circumvent, flustered, trammelling, prohibit, negated, deadened, nullify, counteract
4 Syllables
neutralize, counteracting, neutralizing, circumvented, busybodied, interfered, etherize, tantalize, counteracted, overmaster, intermitting, etherizing, inhibiting, circumventing, undermine, undermined, overcome, neutralized, sabotaging, etherized, disconcerting, tantalized, discourage
5 Syllables
profundicate, overmastering
6 Syllables
discombobulate