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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

U Mobile’s pricing should support broader market recovery, while its peers could benefit from firmer industry mobile revenue growth of 2%-3% in 2026-2027, he adds.

From The Wall Street Journal ● Sep. 29, 2026

The project brought together researchers from the Wellcome Sanger Institute, U of G's Ontario Veterinary College, the University of Bern and other institutions.

From Science Daily ● Sep. 27, 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

At the time, most of Navarrete’s clients were women applying for a U visa, which offers legal status for crime victims who assist law enforcement in the prosecution of perpetrators.

From Los Angeles Times ● Sep. 3, 2026

From top to ground level, they are: U and Z T and Y S and X R and W Q and V The Q-and-V galleries are on the flats.

From "Newjack: Guarding Sing Sing" by Ted Conover

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

From Slate ● Jan. 29, 2022

“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

"Gauntlet on the baby boy @postmalone love u. 2020 is going to be next level. Love you all."

From Fox News ● Dec. 31, 2019

“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

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 order allows the Treasury Department to punish foreign financial institutions—banks based outside the U. S.—if they facilitate “significant transactions” for people or entities that have ties to the Cuban government.

From Barron's ● May 1, 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

“Oh, come, I tell you it’s so. He had one of the big-shot scientists of U. S. Robot & Mechanical Men Corporation over at the office to argue with me.”

From "I, Robot" by Isaac Asimov

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

From BBC ● Apr. 10, 2026

Cole replied: "Appreciate u king! People got to learn how to take a joke. It's all in fun."

From BBC ● Mar. 2, 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?” she wrote in an Instagram story Monday.

From Los Angeles Times ● Jan. 28, 2026

The first guy’s sign says, “How u doin’ Simon?”

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

It is also the most significant single gift ever made to a university in Washington state and the largest gift of any kind in Seattle U’s 133-year history, the university said.

From Seattle Times ● Mar. 13, 2024

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

A London-based non-profit organisation, People Like Us, is raising awareness of people's legal right to challenge automated decisions when they disagree with the outcome.

From BBC ● Oct. 22, 2026

Smith, the SMU student, is president of the college’s It’s On Us chapter.

From The Wall Street Journal ● Oct. 18, 2026

His publicist initially told the Associated Press that the renowned designer died of pneumonia, but a death certificate obtained by Us Weekly paints a different picture.

From Los Angeles Times ● Oct. 14, 2026

He concluded "that the works contain substantial similarities" including the "repeated copying" of the melody from Just The Two of Us, the documents said.

From BBC ● Oct. 2, 2026

This is about Us, with a capital U; everybody who looks like us, feels like us, and is experiencing this pain with us despite not knowing me or Khalil.

From "The Hate U Give" by Angie Thomas

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

Or ‘you are sooo ugly’ — but with 10 u’s, 10 g’s, 10 l’s, like they’re all screaming it at someone.”

From New York Times ● Dec. 5, 2010

It kept reading my a's as g's or u's, my b's as d's and sprinkling periods liberally throughout my text.

From Time Magazine Archive

No mistaking her u's for n’s or her is for e's.

From "The View From Saturday" by E.L. Konigsburg

“I want Milwaukee and Wisconsin to be known and to be heard because a lot of people overlook us and I just want us to have that recognition that we deserve.”

From The Wall Street Journal ● Oct. 23, 2026

"The underwater location allows us to implement systematic, large-scale surveys," Seama explains.

From Science Daily ● Oct. 23, 2026

The World Series is upon us, yet the strange national obsession is not about how Jacob Misiorowski or Junior Caminero might shine, but how many people might watch it.

From Los Angeles Times ● Oct. 23, 2026

This is when our brain makes us think the Moon looks bigger because it is viewed alongside objects on the horizon such as buildings and trees.

From BBC ● Oct. 23, 2026

Humans have always argued about what makes us human.

From "Phineas Gage" by John Fleischman

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