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  • un
    un
    pronoun
    one.
  • UN
    UN
    abbreviation
  • 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 ).
  • 'un
    'un
    pronoun
    a spelling of one

un

1 American  
[uhn] / ən /
Or 'un

pronoun

Dialect.
  1. one.

    young uns; He's a bad un.


UN 2 American  
Or U.N.

abbreviation

  1. United Nations.


un- 3 American  
  1. 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 ).


un- 4 American  
  1. a prefix freely used in English to form verbs expressing a reversal of some action or state, or removal, deprivation, release, etc. (unbend; uncork; unfasten , etc.), or to intensify the force of a verb already having such a meaning (unloose ).


un- 1 British  

prefix

  1. denoting reversal of an action or state

    uncover

    untangle

  2. denoting removal from, release, or deprivation

    unharness

    unman

    unthrone

  3. (intensifier)

    unloose

"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

UN 2 British  

abbreviation

  1. United Nations

"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

'un 3 British  
/ ən /

pronoun

  1. a spelling of one

    that's a big 'un

"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

un- 4 British  

prefix

  1. (freely used with adjectives, participles, and their derivative adverbs and nouns: less frequently used with certain other nouns) not; contrary to; opposite of

    uncertain

    uncomplaining

    unemotionally

    untidiness

    unbelief

    unrest

    untruth

"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

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

“Bring me back un marranito,” she called after us.

From "The First Rule of Punk" by Celia C. Pérez

They included staff working for organisations that partner with the UN, according to an internal memo seen by AFP, and were subsequently released.

From Barron's Aug. 11, 2026

Multiple UN agencies operate across Afghanistan in a host of areas including health and humanitarian response.

From Barron's Aug. 11, 2026

The UN nuclear watchdog on Thursday warned about a rising number of off-site power losses at the Russian-occupied Zaporizhzhia nuclear power plant in Ukraine.

From Barron's Aug. 6, 2026

The paper says the UN has labelled IPPs inhumane.

From BBC Aug. 6, 2026

It was among Congo’s most dangerous cities even in times of peace, and the UN had no contact whatsoever with the entire city of almost a million people.

From "Endangered" by Eliot Schrefer

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

This sense of being un- or under-written raises the spectre of another English author, Rachel Cusk, whose “Outline” trilogy dispenses with many of the classic techniques—plot, dialogue—that give fiction shape.

From The New Yorker Sep. 24, 2018

But because that format is so often used to disguise periods of un- or underemployment, the typical hiring manager’s reaction is, “I’m going to find what this person’s trying to hide,” Milligan says.

From Washington Post Nov. 29, 2016

The elevated price reflects a confluence of both market and organic factors: the un- predictability of supply, the uncontrollable elements that create quality barnacles, the massive seasonal swings in demand.

From Slate Nov. 14, 2016

Laila sat on it and watched the un- moving blanketed mound that was her mother.

From "A Thousand Splendid Suns" by Khaled Hosseini

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

This week it has been hard to escape the distinct impression that people from all sides of various divides have come together to agree the prince was a true wrong ’un.

From The Guardian Nov. 22, 2019

“That baint the way to name 'un, measter, not in the ’ood.”

From "The Once and Future King" by T. H. White

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