verb (used with object)

to release from or as if from a leash; set loose to pursue or run at will.
to abandon control of: to unleash his fury.

Origin of unleash

First recorded in 1665–75; un-2 + leash
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for unleash

Contemporary Examples of unleash

Historical Examples of unleash

  • He suddenly realized how puny man was against the forces man could unleash.

    The Monster

    S. M. Tenneshaw

  • A rage that he could not control, an anger that he wanted to unleash to its fullest.

    The Monster

    S. M. Tenneshaw

  • There was a power in her voice that she had not intended to unleash.

  • I unleash the Press-agent, and off he shoots, in time to get the story into the evening paper.

    The Man Upstairs

    P. G. Wodehouse

  • The great hit also seemed to unleash the fiery spirit which had waited its chance.

British Dictionary definitions for unleash


verb (tr)

to release from or as if from a leash
to free from restraint or control
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for unleash

1670s, from un- (2) + leash (v.). Related: Unleashed; unleashing.

Online Etymology Dictionary, © 2010 Douglas Harper