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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

Even at the time, their crime was divisive - the first trial ended un a mistrial after the jury couldn't reach a verdict.

From BBC May 17, 2025

“Then en un abrir y cerrar de ojos — in a quick second — I’m here.”

From Los Angeles Times Jun. 3, 2024

Even if some other upstart nationality makes a 500-foot baguette tomorrow, France will remain numéro un.

From New York Times May 6, 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

Deputy UN spokesperson Farhan Haq declined to comment on the US walkout, adding the UN expected all member states to respect the decision.

From BBC Jul. 28, 2026

Israeli Prime Minister Benjamin Netanyahu said he planned to attend the UN General Assembly in New York City this autumn, despite the city's mayor, Zohran Mamdani, making threats to arrest him.

From BBC Jul. 27, 2026

Some observers say he's been more strident in pushing for UN reform, and believes the UN secretary-general should take a more hands-on approach.

From Barron's Jul. 23, 2026

She has lamented that the UN has become what she calls a "risk-conservative organization."

From Barron's Jul. 23, 2026

The UN also brought us tools, blankets, and secondhand clothing.

From "Lost Boy, Lost Girl" by John Bul Dau

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

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

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

Night masquerade dawned with an un- usual fog, and when Ash went out into the garden to pump water for her stepsis- ters’ baths, the King’s Forest was invisible behind the cool white mist.

From "Ash" by Malinda Lo

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 it doesn’t matter if we call them public relations experts, background vetters, wrong ’un sniffer-outers, or simply sentient humans over the age of 18 who can read.

From The Guardian Aug. 29, 2019

Then he’d point to one and say, “Don’t load that ’un.

From "Educated" by Tara Westover

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