THESAURUS
let up
abate, ablate, arrest, backpedal, backwater, bate, be eaten away, brake, call a recess, check, clip the wings, consume, consume away, corrode, crumble, curb, decelerate, decline, decrease, delay, deliquesce, detain, die away, die down, diffuse, diminish, disjoin, disperse, dive, draw rein, drop, drop off, dwindle, ease, ease off, ease up, ebb, erode, fall, fall away, fall off, forbear, forgive, free, give quarter, have mercy upon, have pity, hesitate, hold back, hold in check, hold up, impede, keep back, languish, lessen, let down, let go,
let up on, loose, loosen, lose ground, lose momentum, lose speed, melt, melt away, mitigate, moderate, obstruct, pardon, pause, plummet, plunge, recess, reef, rein in, relax, relent, remit, reprieve, rest, retard, run low, sag, scatter, set back, shrink, sink, slack, slack off, slack up, slacken, slake, slow, slow down, slow up, spare, stay, subside, tail off, take a recess, take in sail, take pity on, thaw, throttle down, unbend, unbrace, unglue, unlax, unleash, unstick, unstrain, unstring, unwind, wane, waste, waste away, wear, wear away