USB
/ˌjuː ˌɛs ˈbiː/
"usb" is a 3-letter English headword indexed on PlainSpell.
The verdict
“USB” sits in 20 confusable pairs (corpus #7,407) as a proper noun. The look-alike neighbours are the real trap.
- #7,407
- frequency rank, English
- 1,433
- “U” headwords
- 20
- confusable pairs
According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - Initialism of Universal Serial Bus; a serial bus standard for connecting devices.
Corpus desk
Index EN-usb · USB · English
USB · rank #7,407 · 0 variants · 20 confusables
- FREQ-COMMON #7,407
- LEN-MID 3 letters
- VOW-1 1 vowel
- CONFUS-HIGH 20 pairs
- VAR-0 0 variants
- BOOK-MID 1,433
- PHOTO-FINISH twisted
Nearest frequency peer: twisted (-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 “USB”
Lower corpus rank = more everyday usage (inverted bar length for readability)
- township
township
92,597 corpus weight
- travelled
travelled
92,596 corpus weight
- twisted
twisted
92,595 corpus weight
- USB
USB
92,594 corpus weight
- Vienna
Vienna
92,593 corpus weight
- wade
wade
92,592 corpus weight
What this shows Bars show where “USB” sits against the nearest ranked English headwords in the FrequencyWords band, not a reprint of letter-browse containment.
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 | USB |
| Language | English |
| Part of speech | Proper noun |
| IPA | /ˌjuː ˌɛs ˈbiː/ |
| Letters | 3 |
| Frequency rank | #7,407 |
| Misspellings tracked | 0 |
| Confusable pairs | 20 |
| Source | Wiktionary (kaikki.org) |
Where “USB” sits in English frequency
Easy to mix with look-alikes
The spelling risk for USB is neighbouring look-alikes ("UT", "UV", …), not just typos; it is aproper noun pronounced /ˌjuː ˌɛs ˈbiː/. Frequency #7,407 among 1,433 “U” headwords. 2 recorded senses keep meaning in play.
We couldn't generate a plausible misspelling set for USB, since its letter sequence doesn't invite the usual edit-distance slips. It also participates in 20 confusable-pair relationships, "UT", "UV", "UW", and more, since the words sound or look close enough that writers reach for the wrong one mid-sentence.
This entry's etymology isn't recorded, so any spelling logic here comes from how the word's sounds map to letters, not a documented origin story. The correct English form is USB, spelled U-S-B.
Definition
- 1Initialism of Universal Serial Bus; a serial bus standard for connecting devices.
- 2Initialism of US Bancorp.
Recorded use
Wiktionary examplesThese source excerpts show how USB appears in context. They illustrate usage; the definition above remains the entry’s reference meaning.
New signage is being installed to enhance wayfinding and USB sockets are being added in the main concourse area and Platform 8's waiting area.
USB-C isn’t just how many PC laptops are charged; it’s also how the Chromecast With Google TV draws power. It’s also the only USB port in any modern MacBook, and it’s used for charging and data transfer in many Samsung Galaxy phones (dating back to 2016’s infamous Galaxy Note 7).
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 "USB", not the corpus desk frequency band.
What to do next
You've looked up "USB". Here's where to go from here.
- "USB" maps to 20 confusable pairs in this vintage; the highest-scored is "UT". View pair
- Usage frequency rank #7,407 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.