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• U
  U

  noun

  the 21st letter of the English alphabet, a vowel.
• u.
  u.

  abbreviation

  and.
• U.
  U.

  abbreviation

  and.
• u
  u

  noun

  the 21st letter and fifth vowel of the modern English alphabet

U

¹ American  

[yoo] / ju /

Or u

noun

• U's,
  plural
• Us,
  plural
• u's,
  plural
• us
  plural

1. the 21st letter of the English alphabet, a vowel.

2. any spoken sound represented by the letter U or u, as in music, rule, curious, put, or jug.

3. something having the shape of a U .

4. a written or printed representation of the letter U or u.

5. a device, as a printer's type, for reproducing the letter U or u.

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U ² American  

[yoo] / ju /

pronoun

Informal.

1. you.

   Shoes Fixed While U Wait.

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U ³ American  

[yoo] / ju /

adjective

Informal.

1. characteristic of or appropriate to the upper class, especially of Great Britain.

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U ⁴ American  

[oo] / u /

noun

1. a Burmese title of respect applicable to a man: used before the proper name.

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U ⁵ American  

Symbol.

1. (on a packaged product) certified as kosher by the Union of Orthodox Hebrew Congregations.

2. the 21st in order or in a series.

3. Chemistry. uranium.

4. Biochemistry. uracil.

5. Thermodynamics. internal energy.

6. British. a designation for motion pictures determined as being acceptable for viewing by all age groups.

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u. ⁶ American  

abbreviation

1. and.

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u. ⁷ American  

abbreviation

1. uniform.

2. unit.

3. unsatisfactory.

4. upper.

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U. ⁸ American  

abbreviation

1. and.

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U. ⁹ American  

abbreviation

1. uncle.

2. uniform.

3. union.

4. unit.

5. united.

6. university.

7. unsatisfactory.

8. upper.

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U ¹ British  

symbol

1. united

2. unionist

3. university

4. 1. universal (used to describe a category of film certified as suitable for viewing by anyone)

   2. ( as modifier )

      a U film

5. chem uranium

6. biochem uracil

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abbreviation

1. text messaging you

adjective

1. old-fashioned (esp of language habits) characteristic of or appropriate to the upper class Compare non-U

U. ² British  

abbreviation

1. maths union

2. unit

3. united

4. university

5. upper

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u ³ British  

/ juː /

noun

1. the 21st letter and fifth vowel of the modern English alphabet

2. any of several speech sounds represented by this letter, in English as in mute, cut, hurt, sure, pull, or minus

3. 1. something shaped like a U

   2. ( in combination )

      a U-bolt

      a U-turn

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U ⁴ British  

/ uː /

noun

1. a Burmese title of respect for men, equivalent to Mr

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Other Word Forms

Noun Inflected Forms

• U's
  plural
• Us
  plural
• u's
  plural
• us
  plural

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Etymology

Origin of U²

First recorded in 1840–45

Origin of U³

First recorded in 1950–55; u(pper class)

Origin of U⁴

First recorded in 1930–35; from Burmese ʔú, roughly “Mister, Uncle,” used for senior men and monks

Origin of u.⁶

From the German word und

Origin of U.⁸

From the German word und

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Example Sentences

See Examples For:

U u. U. u U's Us u's us

Yet she eventually found success writing songs for her friend Ariana Grande — chart-topping hits like “Thank U, Next” and “7 Rings” that set up Monét for a breakthrough as a performer with “Jaguar II.”

From Los Angeles Times ● Oct. 2, 2026

Garces Perez’s attorneys hope to secure him a U visa, granted to crime victims, so he can remain in the country to assist in the investigation, according to court filings.

From The Wall Street Journal ● Sep. 22, 2026

U Min Zin, the director at a think tank focused on Myanmar, was arrested on 3 June after travelling to the Chinese city of Kunming for an academic conference.

From BBC ● Sep. 17, 2026

The U of A will lead nine NASA-approved investigations using Roman data, bringing in more than $2 million in funding.

From Science Daily ● Aug. 28, 2026

“My name is Galatia; these waters are mine and my clan’s. I smelled the glimourie on her. U gehygd. I knew her for what she is. Sáwoll. And so I came.”

From "Impossible Creatures" by Katherine Rundell

“Great! Miss u. See u soon. <3,” she replied.

From Slate ● Jan. 29, 2022

"But reading all the positive messages from u guys is makin me cry tnight. Thank u. So grateful for the support & love. U have no idea how much it's helping."

From Fox News ● Sep. 18, 2021

“My Prayers are with u. I’ve lost 1 of the best coaches I’ve ever had.”

From Washington Times ● Aug. 8, 2021

“Tom, Harry again! Really need to speak to u. U do not need to apologize, we understand the circumstances but ‘going public’ will only make the situation worse.

From The Guardian ● Apr. 20, 2020

“Thought I knew u. Looks like I was wrong. One day ur gonna turn around and realize what u thru away.”

From "Simon vs. the Homo Sapiens Agenda" by Becky Albertalli

When the instructions are copied into RNA, the letter T is replaced by U. Consequently, the corresponding stop codons in RNA are written as UAA, UAG, and UGA.

From Science Daily ● Oct. 8, 2026

Its population of Torrey pine trees is one of just two spots in the U. S. where that species is found.

From Los Angeles Times ● Sep. 21, 2026

The opinion then states, “If the officers learn that the individual they stopped is a U. S. citizen or otherwise lawfully in the United States, they promptly let the individual go.”

From Salon ● Feb. 12, 2026

“We categorically reject any claims of providing any form of support to either warring party since the onset of the civil war,” a U. A.E official said.

From The Wall Street Journal ● Oct. 31, 2025

"Your lack of imagination is going to make you absolutely a sitting target. A criminal of the imagination of U. N. Owen can make rings round you any time he—or she—wants to."

From "And Then There Were None" by Agatha Christie

Reacting to the trailblazing astronauts vibing to their song, the band said on Instagram: "Omg... I love u guys."

From BBC ● Apr. 10, 2026

"Googled u after last email," she wrote in October 2011.

From BBC ● Mar. 19, 2026

“You promissed me, u gave me the hope, I believed u,” wrote the woman.

From The Wall Street Journal ● Feb. 12, 2026

"Hey my fellow celebrities u gonna speak up?" the nine-time Grammy winner wrote in an Instagram story post.

From Barron's ● Jan. 27, 2026

I don't know how to say this, but u should check the tumblr.

From "Simon vs. the Homo Sapiens Agenda" by Becky Albertalli

The U's kick-off their League One campaign on Saturday when they host Wigan at the Cledara Abbey Stadium.

From BBC ● Aug. 11, 2026

But he defended Better U’s model, saying that it’s designed around careful screening, conservative dosing, required preparation appointments and safety protocols like blood-pressure monitoring.

From The Wall Street Journal ● Mar. 17, 2026

“If I was to describe Big U’s role in rap, he would definitely be the godfather,” Khalifa said.

From Los Angeles Times ● Mar. 19, 2025

"Expectations for a flood of fresh funding into Man U's coffers for a new stadium and new players are being revised."

From Reuters ● Oct. 16, 2023

The worst report card I’d ever gotten from Mountford Prep had three U’s for Unsatisfactory, and I threw that one down the garbage chute.

From Absolutely Almost by Lisa Graff

Us reporters were given her speech script, allowing us to follow it line-by-line to help us report what she has said quickly and accurately.

From BBC ● Oct. 7, 2026

He even tests his mettle by singing fully in English on “Find Us Again,” which is driven by a melancholic, country-music twang and a typical pop-rock crescendo.

From Los Angeles Times ● Sep. 21, 2026

Indeed, the listing came as reports emerged about the couple’s dedication to their future together, with a source telling Us Weekly that they are “very serious and committed to each other.”

From MarketWatch ● Sep. 21, 2026

Macklemore, known for hits including "Thrift Shop" and "Can't Hold Us," has long vocally supported Palestinians.

From Barron's ● Sep. 15, 2026

Us three set together gainst Tobias and his fly speck box of chocolate.

From "The Color Purple" by Alice Walker

Webster is the man definitively responsible for removing the u’s from “colour” and “honour,” for example.

From The Wall Street Journal ● Dec. 19, 2025

And then, every fourth January, we’re suddenly expected to say it, to spell it, to know where to place the u’s and a’s.

From New York Times ● Jan. 19, 2017

And there are going to be a lot more u’s on the prompter.

From New York Times ● Jun. 3, 2013

To simplify matters, the new rules would remove it from i's and u's.

From Time Magazine Archive

Let u's face it: our lives are miserable, laborious, and short.

From "Animal Farm: A Fairy Story" by George Orwell

Each of us has that ability to enact change.

From Los Angeles Times ● Oct. 15, 2026

Though the movie strains for something epic, the drama doesn’t build so much as accumulate busily in front of us, all in service of a not-quite-revelatory point about the importance of telling overlooked stories.

From The Wall Street Journal ● Oct. 15, 2026

"With this situation now behind us, we are fully focused on winning together."

From BBC ● Oct. 15, 2026

I figure we have a few big travels left in us before large expenditures stop.

From MarketWatch ● Oct. 15, 2026

But the pieces she left behind are enough to leave us in wonder.

From "At Last She Stood" by Erin Entrada Kelly

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