bust, loose, interfere, agitate, threaten, foil, taint, weaken, contaminate, divide, jeopardize, subvert, cut short, abort, shock, upset, undermine, spoil, cripple, mess up, destabilize, dash, undercut, turn on its head, blast apart, cut off (contact/supplies), break up/apart, discombobulate (humorous), sour, tip (the scales/the balance), shake up, chip away (at one's confidence), harm, flood with, drown out
yank, choke, wrap, contain, tie up, curb, jam (phone lines/website), squelch (an uprising), arrest (the progress/process), check, muffle, hold up, spirit away, hamper, restrict, thwart, hinder, deter, forestall, stifle, deprive, stymie, curtail, stall, limit, rein in, drown out, deny (access/admission)
sever, zap, sideswipe, jam, strangle, choke, knock over, plug, bar, upend, fence off/in, enclose, bolt, trap, cover, close, block, sabotage, clog, waylay, halt, stop, tip over, impede, derail, intercept, deflect, obstruct, detour, cripple, snag, stymie, hold back, detach, wipe out, capsize, overturn, stamp out, immobilize, congest, strap, blockade, cordon off, barricade, shut up/away, seal off, body block, dam, gate off, disable (a device), wall off, lock (up), avalanche
sever, zap, sideswipe, jam, strangle, choke, knock over, plug, bar, upend, fence off/in, enclose, bolt, trap, cover, close, block, sabotage, clog, waylay, halt, stop, tip over, impede, derail, intercept, deflect, obstruct, detour, cripple, snag, stymie, hold back, detach, wipe out, capsize, overturn, stamp out, immobilize, congest, strap, blockade, cordon off, barricade, shut up/away, seal off, body block, dam, gate off, disable (a device), wall off, lock (up), avalanche