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Synonyms

unbind

American  
[uhn-bahynd] / ʌnˈbaɪnd /

verb (used with object)

  • unbinds,
    present (3rd person singular)
  • unbound,
    past participle,  past
  • unbinding
    present participle
  1. to release from bonds or restraint, as a prisoner; free.

  2. to unfasten or loose, as a bond or tie.


unbind British  
/ ʌnˈbaɪnd /

verb

  1. to set free from restraining bonds or chains; release

  2. to unfasten or make loose (a bond, tie, etc)

"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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Etymology

Origin of unbind

before 950; Middle English unbinden, Old English unbindan; cognate with German entbinden. See un- 2, bind


Explanation

To unbind is to release someone or something that's tied up. In a fantasy novel, the heroine might unbind the prisoners of the evil ogre and rescue them from his terrifying lair. The verb bind means to secure or fasten something using rope or another kind of restraint. Unbind is the opposite (you can tell from the "reverse" prefix un-). The famous magician and escape artist Harry Houdini managed to unbind himself in many unlikely situations — underwater, in a straitjacket, and buried in the ground, among others.

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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.

See Examples For:

The goal is to “create a situation where no one can unbind their ties,” said Narushige Michishita, a professor of international relations at the National Graduate Institute for Policy Studies in Tokyo.

From New York Times ● Apr. 7, 2024

Once released, the acetylcholine stays in the cleft and can continually bind and unbind to postsynaptic receptors.

From Textbooks ● Jun. 9, 2022

At higher temperatures, these vortices unbind and move away from each other, and are eventually destroyed by the system’s entropy.

From Nature ● May 1, 2019

He spent hours huddling with Sen. Mike Lee of Utah and Kendra Unruh, a Colorado delegate who drove the effort to unbind delegates and thwart Mr. Trump.

From Washington Times ● Jul. 14, 2016

Then they rested and slept without fear upon the ground; for their guides would not permit them to unbind their eyes, and they could not climb.

From "The Fellowship of the Ring" by J.R.R. Tolkien

The group wants delegates to return to the floor once their state reaches the round of balloting that formally unbinds them to do whatever they want.

From Washington Post ● Jul. 13, 2016

Meyer unbinds the captive, and the huge fish and I are floating free in the crystalline blue water.

From Time Magazine Archive

Go for the big bulls while the she unbinds me," and to Bertha Kircher: "Quick!

From Tarzan the Untamed by Edgar Rice Burroughs

DISSIMULATION, standing behind FRAUD, unbinds him, and while all the rest behold SIMPLICITY, they two slip away; PLEASURE, missing FRAUD, saith— PLEASURE.

From A Select Collection of Old English Plays, Volume 6 by William Carew Hazlitt

Like a king over earthly nature, it rouses every force to countless transformations, binds and unbinds innumerable alliances, hangs its heavenly form around every earthly substance.

From Rampolli by George MacDonald

"If the orbital speed of the binaries is less than the kick speed, the wide binaries will become gravitationally unbound," Fuller explains.

From Science Daily ● Jul. 21, 2026

Clemency is a plea, unbound by the structure and procedural limitations of the law.

From Slate ● Mar. 6, 2026

His scores, with their inherent rigor and overt religiosity, seemingly simple structure and patient exposition, conjure a world both foundational and unbound.

From The Wall Street Journal ● Oct. 27, 2025

“The Brutalist” is a film, in part, about the perils of unbound creativity, but Corbet manages to prove his own film wrong by assembling the most monumental achievement of any of the five nominees.

From Salon ● Feb. 28, 2025

We stood there like junior undertakers while the wind turned Cap’s unbound hair into a reasonable facsimile of a rain forest.

From "Schooled" by Gordon Korman

"It was different than the usual encounters I have with my Palestinian artist friends; there was this unbinding connection, because we don't know if we're going to see each other" again, he said.

From Barron's ● Feb. 21, 2026

As part of their bids, the companies had also submitted unbinding offers to build three more nuclear reactors.

From Seattle Times ● Jan. 31, 2024

The economies of the two nations are deeply enmeshed at this point, and unbinding them will be painful—especially for industries like agriculture, for which trade with China has been a boon.

From Slate ● Apr. 4, 2018

To the "unbinding" campaigners, the reluctance of the key 112 delegates to discuss this may simply mean they're holding their cards.

From Washington Post ● Jun. 9, 2016

“We have to get out of here. Help me with the unbinding spell, but be super careful you don’t do it to your leg by accident.”

From "Witchlings" by Claribel A. Ortega

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