slack up

abate curtail decrease dilute diminish dwindle ease erode impair lighten minimize mitigate narrow shrink slacken taper off weaken

abridge amputate attenuate clip close contract crop cut de-escalate decline degrade downsize drain minify moderate soft pedal taper thin truncate

become smaller cut back die down grow less roll back slow down take the bite out take the edge off take the sting out wind down

develop enlarge expand extend grow increase intensify irritate lengthen prolong strengthen worsen

go up rise stretch

raise