SFR
"sfr" is a 3-letter English headword indexed on PlainSpell.
The verdict
“SFR” sits in 20 confusable pairs (corpus #46,771) as a proper noun. The look-alike neighbours are the real trap.
- #46,771
- frequency rank, English
- 6,566
- “S” headwords
- 20
- confusable pairs
According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - Initialism of Socialist Federal Republic.
Corpus desk
Index EN-sfr · SFR · English
SFR · rank #46,771 · 0 variants · 20 confusables
- FREQ-MID #46,771
- LEN-MID 3 letters
- VOW-0 0 vowels
- CONFUS-HIGH 20 pairs
- VAR-0 0 variants
- BOOK-DENSE 6,566
- PHOTO-FINISH SETI
Nearest frequency peer: SETI (-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 “SFR”
Peers at similar corpus weight, separate from look-alike pairs below
- Selangor
Selangor
53,234 corpus weight
- serviceman
serviceman
53,232 corpus weight
- SETI
SETI
53,231 corpus weight
- SFR
SFR
53,230 corpus weight
- Shinjuku
Shinjuku
53,229 corpus weight
- shorting
shorting
53,227 corpus weight
What this shows Bars place “SFR” 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 | SFR |
| Language | English |
| Part of speech | Proper noun |
| Letters | 3 |
| Frequency rank | #46,771 |
| Misspellings tracked | 0 |
| Confusable pairs | 20 |
| Source | Wiktionary (kaikki.org) |
Corpus rank beside confusables of “SFR”
Easy to mix with look-alikes
The spelling risk for SFR is neighbouring look-alikes ("so", "SI", …), not just typos; it is aproper noun. Frequency #46,771 among 6,566 “S” headwords. Gloss: "Initialism of Socialist Federal Republic.".
SFR doesn't appear in our generated misspelling index, and the word's spelling is regular enough that our generator found nothing worth flagging. It also participates in 20 confusable-pair relationships, "so", "SI", "SS", and more, since the words sound or look close enough that writers reach for the wrong one mid-sentence.
Etymologically, the entry records: * Socialist Federal Republic of Yugoslavia (shortened to SFRY) The correct English form is SFR, spelled S-F-R.
Definition
- 1Initialism of Socialist Federal Republic.
Etymology
* Socialist Federal Republic of Yugoslavia (shortened to SFRY)
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 "SFR", not the corpus desk frequency band.
Same letter count
Frequency-ranked English headwords with 3 letters (nearest by frequency rank).