THESAURUS
slow down
abate, allay, alleviate, arrest, assuage, attemper, backpedal, backwater, bank the fire, block, blunt, bog down, boycott, brake, bridle, chasten, check, clip the wings, confine, constrain, contain, control, cool, cool off, curb, curtail, curtail expenses, cut back, cut corners, cut down, damp, dampen, de-emphasize, deaden, deadlock, decelerate, decrease, delay, detain, diminish, dompt, downplay, drag, draw rein, dull, ease, ease off, ease up, enjoin, extenuate, go on strike, go out, govern, guard, halt, hang up, hinder, hold, hold at bay, hold back, hold fast, hold in, hold in check, hold in leash, hold out, hold up, impede, inhibit, keep, keep back, keep from, keep in, keep in check, keep under control, keep within bounds, lag, lay, lay under restraint, lenify, lessen, let down, let up, let up on, lighten, lock out, lose ground, lose momentum, lose speed, make late, mire, mitigate, moderate, modulate, obstruct, obtund, palliate, pare down expenses, picket, play down, prohibit, pull, pull in, qualify, reduce, reduce the temperature, reef, rein, rein in, relax, restrain, retard, retrench, revolt, roll back, set back, shut it down, sit down, slack, slack off, slack up, slacken, slow, slow up, smother, snub, sober, sober down, soften, stall, stay, stifle, stop, straiten, strike, stymie, subdue, suppress, take a reef, take in sail, tame, temper, throttle down, tone down, tune down, unbend, underplay, unlax, unwind, walk out, weaken, withhold