English Words: U

23,789 words · Page 1 of 476

ucharacter

The twenty-first letter of the English alphabet, called u and written in the Latin script.

U of Dubname

The University of Wisconsin–Madison.

U of T timename

A system in which an event (usually a class) begins ten minutes after the hour.

U&Cphrase

Abbreviation of usual and customary (price); the retail price if not covered by insurance.

u'recontraction

Informal form of you're.

U-235noun

Abbreviation of uranium-235.

U-boatnoun

Any German submarine of the First or Second World War, or any Austro-Hungarian submarine of the First World War.

U-boaternoun

A submariner on a U-boat

U-Dubname

Alternative spelling of UW (“University of Washington”).

U-eynoun

Alternative form of uey.

U-Haulnoun

A rental vehicle, especially a moving truck.

U-Haul lesbiannoun

A lesbian in a relationship that progresses very quickly, for example moving in together after only a short period of time.

U-Haul syndromenoun

In lesbian culture, the tendency of relationships to progress very quickly, for example when partners move in together after only a short period of time.

u-ienoun

Alternative form of uey.

U-Mname

Initialism of University of Michigan.

U-nessnoun

The state or quality of being U (characteristic of the upper classes, particularly in the use of language).

U-pickadj

Of a farm operation, in which a customer can harvest the produce they wish to purchase.

U-RPname

The form of Received Pronunciation used by the upper classes.

U-shapedadj

Shaped like the letter U: bent such that two ends are parallel, or having a cross-section similar in appearance to a broad U.

U-shapedlyadv

In a U-shaped manner.

U-shapednessnoun

The state or quality of being U-shaped.

U-tubenoun

A tube in the shape of a capital U, in certain applications having a semipermeable membrane in the middle.

U-turnnoun

A turn in a vehicle carried out by driving in a semicircle in order to travel in the opposite direction.

U-turnernoun

A person or vehicle that performs a U-turn.

u-wordnoun

Any word beginning with u, especially one that is (sometimes humorously) treated as controversial in a given context, such as union or uppity.

U. S. A.name

Alternative form of USA.

U. Statesname

Abbreviation of United States.

U.N.name

Alternative spelling of UN.

U.N.I.C.E.F.name

Alternative spelling of UNICEF.

U.S.name

Alternative spelling of US.

U.S. Americanadj

American (of or from the U.S.).

U.S. Grantnoun

Synonym of Ulysses S. Grant.

U.S. of A.name

Abbreviation of United States of America.

U.S. of Americaname

Alternative form of US of America: abbreviation of United States of America.

U.S.C.name

Initialism of United States Code.

U.S.S.R.name

Alternative spelling of USSR.

U.S.T.A.name

Alternative form of USTA (“United States Tennis Association”).

U2phrase

Abbreviation of you too.

U=Uphrase

Abbreviation of Undetectable = Untransmittable; if an HIV-positive person has an undetectable viral load, they cannot sexually transmit HIV to others.

UAnoun

Initialism of unauthorized absence.

UACnoun

Initialism of unaccompanied alien child: a child sent to cross an international border without a formal adult guardian.

Uachtaránname

Title of a person who holds the office of President of Ireland.

UAEnoun

Initialism of unrecoverable application error (the standard Microsoft Windows error message in Win16)

UAFname

Initialism of Uganda Athletics Federation.

uakarinoun

Any of several arboreal monkeys, of the genus Cacajao, from the Amazon basin.

uakititenoun

An isometric mineral containing vanadium and nitrogen.

Ualapuename

A census-designated place in Maui County, Hawaii, United States.

UAPnoun

Initialism of unidentified anomalous phenomenon. The umbrella category for all environments.

UARTnoun

Acronym of universal asynchronous receiver transmitter.

uarunoun

Uaru amphiacanthoides, a species of cichlid native to South America where it occurs in clear streams of the Amazon Basin.

Spelling & Dictionary Insight

The English alphabetical index for the letter U contains 23,789 headwords drawn from our Wiktionary-derived dictionary table. At 50 entries per page the browse splits into 476 pages, and you are currently viewing page 1. Every row above is a dictionary-backed entry with a canonical slug, and each links through to a full definition page with pronunciation, senses, etymology, and related-word data where available.

On this page 50 of 50 entries carry a part-of-speech tag and 50 carry at least one stored definition. Coverage varies across letters because Wiktionary volunteers build entries at different speeds for different parts of the alphabet, letters with common starting sounds (S, C, T, P) usually have the densest coverage, while less frequent starters (X, Q, Z) tend to have shorter but more specialised lists. PlainSpell surfaces whatever data is present and links back to the source when a definition is not yet recorded.

For readers using this index as a spelling reference, the guarantee is that every form you see on the list is a documented English headword, not a guess, not a derived inflection lacking a lemma row. If a word you expected to find is absent from the "U" list, it usually means the form exists only as an inflection of another lemma (e.g. a past participle stored under the infinitive) or the entry has not yet been imported from Wiktionary. Use the search bar or the misspelling lookup to resolve these cases.