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unleash

[uhn-leesh] /ʌnˈliʃ/
verb (used with object)
1.
to release from or as if from a leash; set loose to pursue or run at will.
2.
to abandon control of:
to unleash his fury.
Origin
1665-1675
1665-75; un-2 + leash
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for un leash

unleash

/ʌnˈliːʃ/
verb (transitive)
1.
to release from or as if from a leash
2.
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
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Word Origin and History for un leash

unleash

v.

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

Online Etymology Dictionary, © 2010 Douglas Harper
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