UO
"uo" is a 2-letter English headword indexed on PlainSpell.
The verdict
“UO” sits in 20 confusable pairs (corpus #39,629) as a proper noun. The look-alike neighbours are the real trap.
- #39,629
- frequency rank, English
- 1,433
- “U” headwords
- 20
- confusable pairs
According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - Initialism of University of Oregon
Corpus desk
Index EN-uo · UO · English
UO · rank #39,629 · 0 variants · 20 confusables
- FREQ-MID #39,629
- LEN-SHORT 2 letters
- VOW-2 2 vowels
- CONFUS-HIGH 20 pairs
- VAR-0 0 variants
- BOOK-MID 1,433
- PHOTO-FINISH untamed
Nearest frequency peer: untamed (-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 neighbours of confusable “UO”
Peers at similar corpus weight, separate from look-alike pairs below
- unguarded
unguarded
60,376 corpus weight
- unionized
unionized
60,375 corpus weight
- unscientific
unscientific
60,374 corpus weight
- untamed
untamed
60,373 corpus weight
- UO
UO
60,372 corpus weight
- utilisation
utilisation
60,369 corpus weight
What this shows Bars place “UO” against nearest ranked English headwords, not a reprint of the confusable-pair desk.
Visual similarity to commonly confused words
How many letter changes separate each confused pair (Levenshtein distance, normalized).
Source: PlainSpell confusable corpus (Wiktionary, CC BY-SA).
| Property | Value |
|---|---|
| Headword | UO |
| Language | English |
| Part of speech | Proper noun |
| Letters | 2 |
| Frequency rank | #39,629 |
| Misspellings tracked | 0 |
| Confusable pairs | 20 |
| Source | Wiktionary (kaikki.org) |
Corpus rank beside confusables of “UO”
Easy to mix with look-alikes
The spelling risk for UO is neighbouring look-alikes ("up", "us", …), not just typos; it is aproper noun. Frequency #39,629 among 1,433 “U” headwords. Gloss: "Initialism of University of Oregon".
We couldn't generate a plausible misspelling set for UO, a sign its spelling follows regular English conventions. It also participates in 20 confusable-pair relationships, "up", "us", "ur", and more, where similar look or sound leads writers to substitute one word for another in context.
This entry's etymology isn't recorded, so its spelling is best read as a straightforward mapping from sound to letter. The correct English form is UO, spelled U-O.
Definition
- 1Initialism of University of Oregon
Recorded use
Wiktionary exampleThese source excerpts show how UO appears in context. They illustrate usage; the definition above remains the entry’s reference meaning.
Gaspar said she hopes UO students utilize the red cards or share them with friends and family who may be at risk for deportation.
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.