(vb. n.) of Slacken.

abatement allayment alleviation arrest assuagement attenuation attrition blunting calming check damping deadening debilitation deceleration delay demulsion detention devitalization dilution diminution drag dulcification dulling ease-off ease-up easing effemination enervation enfeeblement evisceration exhaustion extenuation falling-off fatigue flagging holdup hushing inanition lag languishment leniency lessening letdown letup lightening loosening lulling minus acceleration mitigation modulation mollification obstruction pacification palliation quietening quieting reduction relaxation remission retardation retardment setback slack-up slowdown slowing slowing down slowup softening soothing subduement tempering thinning tranquilization weakening