foiling, derailing, stymie, sabotaging, preventing, neutralizing, scuttling, stopping, curbing, snuffing, averting, countering, snaring, squashing, squelching, blocking, quelling, forestalling, disrupting, undermining, combating, nabbing, deterring, blunting, spurring, frustrate, impeding, nullifying, protecting, snagging, halting, intercepting, checkmating, counteracting, subverting, securing, subduing, hindering, curtailing, repelling, spoiling, stalling, outsmarting, aiding, limiting, ridding, circumventing, suppressing, deflecting, avoiding, negating, stifle, taming, defeating, outfoxing, defusing, undoing, inhibiting, hamstringing, apprehending, silencing, accomplishing, dooming, eradicating, controlling, bolstering, furthering, quashing, cripple, corralling, outwitting, facilitating, effecting, hampering, scupper, boosting, vanquishing, preempting, tackling, attacking, ruining, wrecking, persuading, discrediting, resisting, nailing, advancing, devising, stave off, overcoming, sidestepping, wresting, destroying, overthrowing, repulsing, infiltrating, shielding, rebuffing, acquiescing, snatching, undercutting, depriving, estrangement, discouragement, weakening, aggravation, annoyance, curtailment, postponement, privation, unhappiness, embarrassment, frustration, irritation, readjustment, withholding, awkwardness, crippling, neglect, severance, traumatism

black eye, blow, reversal, reverse, setback, stymie

hindrance, interference, interfering

frustrating, frustrative, preventative, preventive