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Synonyms

unleash

American  
[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.


unleash British  
/ ʌnˈliːʃ /

verb

  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

Etymology

Origin of unleash

First recorded in 1665–75; un- 2 + leash

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

None of these summer-style temperatures in early spring bodes well for the actual summer ahead, in which a “Super El Niño” is predicted to unleash itself, a weather phenomenon some are calling “Godzilla El Niño.”

From Salon • Apr. 4, 2026

It’s all part of Underwood’s plan to track down the best basketball players in the world—anywhere in the world—and unleash them on the heartland of college basketball.

From The Wall Street Journal • Mar. 25, 2026

To unleash sterile male mosquitoes in a broader swath of the Greater L.A. district, officials are seeking up to $20 a year per single family home.

From Los Angeles Times • Mar. 22, 2026

A deluge of weight‑loss drugs is set to transform the global fight against obesity as India prepares to unleash low‑cost generic versions of injections like Ozempic after a key patent expired Friday.

From Barron's • Mar. 20, 2026

He wondered what power he would unleash if he touched it.

From "Wolf Brother" by Michelle Paver