USF
"usf" is a 3-letter English headword indexed on PlainSpell.
The verdict
“USF” sits in 20 confusable pairs (corpus #38,224) as a proper noun. The look-alike neighbours are the real trap.
- #38,224
- frequency rank, English
- 1,433
- “U” headwords
- 20
- confusable pairs
According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - Initialism of Nintendo Ultra 64 Sound Format.
Corpus desk
Index EN-usf · USF · English
USF · rank #38,224 · 0 variants · 20 confusables
- FREQ-MID #38,224
- LEN-MID 3 letters
- VOW-1 1 vowel
- CONFUS-HIGH 20 pairs
- VAR-0 0 variants
- BOOK-MID 1,433
- PHOTO-FINISH usurped
Nearest frequency peer: usurped (+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 “USF”
Peers at similar corpus weight, separate from look-alike pairs below
- uptime
uptime
61,780 corpus weight
- urinal
urinal
61,779 corpus weight
- USF
USF
61,777 corpus weight
- usurped
usurped
61,776 corpus weight
- vagabond
vagabond
61,775 corpus weight
- vamos
vamos
61,774 corpus weight
What this shows Bars place “USF” 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 | USF |
| Language | English |
| Part of speech | Proper noun |
| Letters | 3 |
| Frequency rank | #38,224 |
| Misspellings tracked | 0 |
| Confusable pairs | 20 |
| Source | Wiktionary (kaikki.org) |
Corpus rank beside confusables of “USF”
Easy to mix with look-alikes
The spelling risk for USF is neighbouring look-alikes ("UT", "UV", …), not just typos; it is aproper noun. Frequency #38,224 among 1,433 “U” headwords. 5 recorded senses keep meaning in play.
USF doesn't appear in our generated misspelling index, which points to an orthography that plays by predictable English rules. It also participates in 20 confusable-pair relationships, "UT", "UV", "UW", and more, where similar look or sound leads writers to substitute one word for another in context.
This headword's origin isn't recorded in our source data, so its spelling is best read as a straightforward mapping from sound to letter. The correct English form is USF, spelled U-S-F.
Definition
- 1Initialism of Nintendo Ultra 64 Sound Format.
- 2Initialism of United States Frigate.
- 3Initialism of United States Forces.
- 4Initialism of University of South Florida.
- 5Initialism of University of San Francisco.
Recorded use
Wiktionary exampleThese source excerpts show how USF appears in context. They illustrate usage; the definition above remains the entry’s reference meaning.
A map of the Centers and Connections proposal includes the USF area, East Lake-Orient Park and some areas of Brandon.
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
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Similar English words by spelling shape
Same letter count and similar misspelling depth for "USF", not the corpus desk frequency band.
Same letter count
Frequency-ranked English headwords with 3 letters (nearest by frequency rank).