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