cast off, detach, diffuse, disengage, disjoin, disperse, doff, ease, ease off, free, let go, let up, liberate, loose, loosen, relax, release, remove, scatter, slack, slack off, slacken, take off, unbar, unbind, unbolt, unbridle, unbuckle, unbutton, uncage, unchain, unclasp, undo, unfasten, unfetter, ungag, unglue, unhandcuff, unhobble, unlace, unlash, unlatch, unlock, unloose, unloosen, unmanacle, unmuzzle, unpen, unpinion, unshackle, unstick, unstrap, untether, untie, untruss, unyoke, vent, weigh anchor