militate, impede, hamper, inhibit, jeopardize, complicate, impair, stymie, undermine, imperil, stifle, derail, obstruct, disrupt, affect, dampen, cripple, endanger, threaten, diminish, interfere, discourage, preclude, weaken, constrain, exacerbate, hasten, frustrate, aggravate, deter, restrict, detract, hobble, mar, curtail, spur, impinge, overshadow, thwart, facilitate, undercut, negate, prolong, scupper, necessitate, hurt, erode, retard, tarnish, crimp, depress, deprive, squelch, spoil, disturb, scuttle, paralyze, accelerate, distract, distort, lessen, overwhelm, intensify, hamstringing, backfire, harm, worsen, ruin, devastate, alter, constrict, prevent, perturb, taint, enhance, overtax, encourage, forestall, heighten, prompt, precipitate, allow, limiting, sabotaging, dilute, interrupt, upend, debilitate, mean, engender, augur, improve, destroy, stunting, dooms, instigate, embolden, precede, hinge, confuse, unsettle, expedite, hind, anterior, hindmost, mesal, acromial, amputated, apical, caudal, cephalic, distal, dorsomedial, flexed, front, posterior, rostral, aboral, anteroventral, cephalad, chamfered, inner

block, bottleneck, check, close up, filibuster, hang, jam, occlude, set back, stonewall, stunt

baffle, bilk, block, blockade, counteract, countermine, counterproductive, cross, disadvantage, disfavor, disfavour, embarrass, foil, frustrate, hedge, interfere, interpose, intervene, obstruct, preventative, preventive, queer, sabotage, scotch, set back, spoil, step in, stonewall, stymie, stymy, subvert, thwart, unaccountable, undermine, unfavorable, unfavourable, weaken

bias, forbid, foreclose, keep

back, handicap