(v. t.) To free from a leash, or as from a leash; to let go; to release; as, to unleash dogs.

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