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un
unpronounone.
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UN
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un-
un-a prefix meaning “not,” freely used as an English formative, giving negative or opposite force in adjectives and their derivative adverbs and nouns (unfair; unfairly; unfairness; unfelt; unseen; unfitting; unformed; unheard-of; un-get-at-able ), and less freely used in certain other nouns (unrest; unemployment ).
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'un
un
1 Americanpronoun
abbreviation
prefix
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denoting reversal of an action or state
uncover
untangle
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denoting removal from, release, or deprivation
unharness
unman
unthrone
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(intensifier)
unloose
abbreviation
pronoun
prefix
Usage
This spelling is intended to reflect a dialectal or informal pronunciation
Synonym Usage
See in- 3.
Etymology
Origin of un-3
Middle English un-, on-, Old English; cognate with Dutch on-, Gothic, German un-, Old Norse ū-, ō-; akin to Latin in-, Greek an-, a-. See a- 6, an- 1, in- 3
Origin of un-4
Middle English, Old English un-, on-; cognate with Gothic and-, Dutch ont-, German ent-; akin to Latin ante, Greek antí; cf. ante-, anti-
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:
Nerves crept in, and as the match entered extra time, Spain began to fear that this final would go down as un robo, a robbery.
From The Wall Street Journal ● Jul. 19, 2026
Boris Johnson, who was prime minister at the time, told the French they should "prenez un grip" and "donnez-moi un break".
From BBC ● Jul. 7, 2025
Living in Paris for a year certainly had its share of stresses, mostly because my French language skills never really advanced beyond me saying, Je parle français un petit peu, before switching to English.
From Slate ● Jan. 6, 2025
“Then en un abrir y cerrar de ojos — in a quick second — I’m here.”
From Los Angeles Times ● Jun. 3, 2024
As time went on, the concern un hooked itself from the fear and took on a life of its own.
From "Little Fires Everywhere" by Celeste Ng
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The pair were detained after the president put pressure on the UN to hand them over.
From BBC ● Aug. 30, 2026
"We haven't seen a mountain hazard event like this for a very, very long time," Kamal Kishore, head of the UN Office for Disaster Risk Reduction, told the press conference.
From Barron's ● Aug. 28, 2026
UN aid chief Tom Fletcher said on X that the United Nations was "moving at speed to save lives".
From Barron's ● Aug. 28, 2026
All of social media should be designed to be safe for children, the UN human rights chief has said after Meta settled a massive court case in the US.
From BBC ● Aug. 27, 2026
He said I should go to the UN compound, just outside Kakuma.
From "Lost Boy, Lost Girl" by John Bul Dau
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What fascinating characters “The English” has at the margins quickly cycle in and out of the miniseries — bad men and women whose motivations and backgrounds remain un- or underexplored.
From Los Angeles Times ● Nov. 11, 2022
The standard for each of you is internal and about you alone: Is a particular accommodation for someone else comfortable or un-?
From Washington Post ● Oct. 2, 2022
All of which is to say that in ways both subtle and not, intentional and un-, he has complicated his relationship with audiences, elaborated and often inverted the idea of Matt Damon.
From New York Times ● Jul. 27, 2021
Along with the vaccine rollout, some states have already been nixing restrictions, and the un- or semi-vaccinated among us are getting a little laxer with our safety calculations.
From Slate ● Apr. 6, 2021
To avoid misunderstanding, use another word to describe an un- lucky accident. fulsome.
From "Woe Is I" by Patricia T. O'Conner
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The young ’un is Trey McKinney, a wiry prodigy who broke into Elite Series fishing in his teens and has twice finished runner-up for Angler of the Year.
From The Wall Street Journal ● Aug. 29, 2026
Mr Morris explained: "I said to my partner 'That looks like the couple that were in the news', and she said 'She's definitely got something under that coat. It may be a little 'un'."
From BBC ● Jan. 30, 2024
“I can tell a wrong ‘un a mile away.”
From Los Angeles Times ● Jul. 24, 2022
In French, it’s called ‘un sot-l’y-laisse’—i.e., only an idiot leaves it behind.”
From Fox News ● Jul. 24, 2020
“But how can a pore urchin dump un on ter noase? When ee ha’nt got nothing to dump with, nor way to hold ’un?
From "The Once and Future King" by T. H. White
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Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.