u

/ˈjuː/

//ˈjuː// character

By · According to Wiktionary data (CC BY-SA) ·

"u" is a 1-letter English headword indexed on PlainSpell.

The verdict

“u” sits in 20 confusable pairs (corpus #819) as a character. The look-alike neighbours are the real trap.

#819
frequency rank, English
1,433
“U” headwords
20
confusable pairs

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - The twenty-first letter of the English alphabet, called u and written in the Latin script.

Corpus desk

Index EN-u · u · English

u · rank #819 · 0 variants · 20 confusables

  • FREQ-CORE #819
  • LEN-SHORT 1 letters
  • VOW-1 1 vowel
  • CONFUS-HIGH 20 pairs
  • VAR-0 0 variants
  • BOOK-MID 1,433
  • PHOTO-FINISH style

Nearest frequency peer: style (-1 rank slots)

Read with this headword: Spelling guide for this pattern

Desk codes from Wiktionary headword shape, FrequencyWords rank tier, confusable-pair count, generated misspelling depth, letter-cohort book size, and photo-finish peer. Not a difficulty grade.

Frequency neighbourhood for “u”

Lower corpus rank = more everyday usage (inverted bar length for readability)

corpus weight

What this shows Bars show where “u” sits against the nearest ranked English headwords in the FrequencyWords band, not a reprint of letter-browse containment.

Source FrequencyWords open word-frequency list As of September 3, 2026

Visual similarity to commonly confused words

How many letter changes separate each confused pair (Levenshtein distance, normalized).

u vs up
50% similar
u vs us
50% similar
u vs UK
0% similar

Source: PlainSpell confusable corpus (Wiktionary, CC BY-SA).

Key facts for u
PropertyValue
Headwordu
LanguageEnglish
Part of speechCharacter
IPA/ˈjuː/
Letters1
Frequency rank#819
Misspellings tracked0
Confusable pairs20
SourceWiktionary (kaikki.org)

Where “u” sits in English frequency

This scale runs from the tiny cluster of words that carry ordinary speech (left) to the long tail of words almost nobody reaches for (right).ulands here:

#1#100#1K#10K#100K
← used constantlyrarely used →

Ticks step logarithmically, so each one marks a roughly tenfold drop in how often the word turns up. Same rarity band neighbours include “style” (#818), “vote” (#820), “send” (#817). Source: FrequencyWords open word-frequency list.

Easy to mix with look-alikes

The spelling risk for u is neighbouring look-alikes ("up", "us", …), not just typos; it is acharacter pronounced /ˈjuː/. Frequency #819 among 1,433 “U” headwords. Gloss: "The twenty-first letter of the English alphabet, called u and written in the Latin script.".

No misspelling variants are generated for u in our index, typically a sign the spelling maps closely to how the word sounds. It also participates in 20 confusable-pair relationships, "up", "us", "UK", and more, a pairing that trips writers up because the two words share enough sound or shape to blur together.

Etymologically, the entry records: From Middle English lower case letter v (also written u), from Old English lower case u, from 7th century replacement by lower case u of the Anglo-Saxon Futhorc letter ᚢ (u, ur), derived from Raetic letter u. Before the 1700s, the pointed form v was written… The correct English form is u, spelled U.

Definition

  1. 1
    The twenty-first letter of the English alphabet, called u and written in the Latin script.

Recorded use

Wiktionary example

These source excerpts show how u appears in context. They illustrate usage; the definition above remains the entry’s reference meaning.

  1. I prefer the u in Arial to the one in Times New Roman.

Etymology

From Middle English lower case letter v (also written u), from Old English lower case u, from 7th century replacement by lower case u of the Anglo-Saxon Futhorc letter ᚢ (u, ur), derived from Raetic letter u. Before the 1700s, the pointed form v was written at the beginning of a word, while a rounded form u was used elsewhere, regardless of sound. So whereas valor and excuse appeared as in modern printing, have and upon were printed haue and vpon. Eventually, in the 1700s, to differentiate between the consonant and vowel sounds, the v form was used to represent the consonant, and u the vowel sound. v then preceded u in the alphabet, but the order has since reversed.

Definitions, pronunciation, and etymology for this entry are drawn from Wiktionary via the kaikki.org structured extract (CC BY-SA); frequency ordering uses the FrequencyWords open word-frequency list (2018 English corpus, MIT). See the methodology for how each field is sourced and updated.

Frequently Asked Questions

How do you spell "u"?
"u" is spelled U. The IPA pronunciation is /ˈjuː/.
What does "u" mean?
As a character, "u" means: The twenty-first letter of the English alphabet, called u and written in the Latin script.
What words are commonly confused with "u"?
"u" is commonly confused with "up", "us", "UK". These words look or sound similar but have different meanings. PlainSpell provides detailed comparisons for each pair.
How do you pronounce "u"?
The IPA (International Phonetic Alphabet) transcription for "u" is /ˈjuː/. Click the speaker icon on the pronunciation badge above to hear it spoken aloud where audio is available.
What is the origin of the word "u"?
From Middle English lower case letter v (also written u), from Old English lower case u, from 7th century replacement by lower case u of the Anglo-Saxon Futhorc letter ᚢ (u, ur), derived from Raetic letter u. Before the 1700s, the pointed form v w... See the full etymology section above for more details.
Is PlainSpell free to use?
Yes, PlainSpell is a completely free word reference. You can look up definitions, pronunciations, confusable pairs, homophones, and spelling corrections across 5 languages without any sign-up or subscription.

What to do next

You've looked up "u". Here's where to go from here.

  • "u" maps to 20 confusable pairs in this vintage; the highest-scored is "up". View pair
  • Usage frequency rank #819 among English headwords in this corpus. Corpus statistics
  • Browse more English words in the "U" letter cohort. U–Z browse
  • PlainSpell rotates a curated Word of the Day from the English corpus, a passive way to discover vocabulary. Word of the Day

PlainSpell is a reference corpus, not spelling advice. Verify unusual forms in context.

Data Source

Wiktionary (via kaikki.org), licensed under CC BY-SA & GFDL. Word ordering uses an open word-frequency list; misspelling variants are generated by edit-distance from the correct headword.

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list