- the 21st letter of the English alphabet, a vowel.
- any spoken sound represented by the letter U or u, as in music, rule, curious, put, or jug.
- something having the shape of a U.
- a written or printed representation of the letter U or u.
- a device, as a printer's type, for reproducing the letter U or u.
- you: Shoes Fixed While U Wait.
- characteristic of or appropriate to the upper class, especially of Great Britain.
- a Burmese title of respect applicable to a man: used before the proper name.
- (on a packaged product) certified as kosher by the Union of Orthodox Hebrew Congregations.
- the 21st in order or in a series.
- uranium.
- uracil.
- internal energy.
- a designation for motion pictures determined as being acceptable for viewing by all age groups.
- and.
- uniform.
- unit.
- unsatisfactory.
- upper.
- and.
- uncle.
- uniform.
- union.
- unit.
- united.
- university.
- unsatisfactory.
- upper.
- the 21st letter and fifth vowel of the modern English alphabet
- any of several speech sounds represented by this letter, in English as in mute, cut, hurt, sure, pull, or minus
- something shaped like a U
- (in combination)
- united
- unionist
- university
- (in Britain)
- universal (used to describe a category of film certified as suitable for viewing by anyone)
- (as modifier)
- uranium
- uracil
- you
- (esp of language habits) characteristic of or appropriate to the upper class
- a Burmese title of respect for men, equivalent to Mr
- union
- unit
- united
- university
- upper