exon
"exon" is a 4-letter English headword indexed on PlainSpell.
The verdict
“exon” sits in 20 confusable pairs (corpus #49,909) as a noun. The look-alike neighbours are the real trap.
- #49,909
- frequency rank, English
- 2,246
- “E” headwords
- 4
- tracked misspellings
- 20
- confusable pairs
According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - An officer of the King's Body Guard of the Yeomen of the Guard.
Corpus desk
Index EN-exon · exon · English
exon · rank #49,909 · 4 variants · 20 confusables
- FREQ-MID #49,909
- LEN-MID 4 letters
- VOW-2 2 vowels
- CONFUS-HIGH 20 pairs
- VAR-LOW 4 variants
- BOOK-MID 2,246
- PHOTO-FINISH exhilaration
Nearest frequency peer: exhilaration (-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 “exon”
Peers at similar corpus weight, separate from look-alike pairs below
- eroticism
eroticism
50,098 corpus weight
- exhilaration
exhilaration
50,093 corpus weight
- exon
exon
50,092 corpus weight
- extensible
extensible
50,090 corpus weight
- extrapolati…
extrapolation
50,089 corpus weight
- falsify
falsify
50,088 corpus weight
What this shows Bars place “exon” 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 | exon |
| Language | English |
| Part of speech | Noun |
| Letters | 4 |
| Frequency rank | #49,909 |
| Misspellings tracked | 4 |
| Confusable pairs | 20 |
| Source | Wiktionary (kaikki.org) |
Corpus rank beside confusables of “exon”
Easy to mix with look-alikes
The spelling risk for exon is neighbouring look-alikes ("expo", "Exxon", …), not just typos; it is anoun. Frequency #49,909 among 2,246 “E” headwords. Gloss: "An officer of the King's Body Guard of the Yeomen of the Guard.".
Our generated misspelling index lists 4 likely wrong-spelling variants for exon, with forms such as "eoxn", "exno", and "exonn". Each of these forms differs from the correct spelling by one small edit: a doubled letter, a dropped silent letter, or a substituted vowel. It also participates in 20 confusable-pair relationships, "expo", "Exxon", "ex", and more, since the words sound or look close enough that writers reach for the wrong one mid-sentence.
Etymologically, the entry records: Apparently an attempt to express the pronunciation of French exempt. The correct English form is exon, spelled E-X-O-N.
Definition
- 1An officer of the King's Body Guard of the Yeomen of the Guard.
Etymology
Apparently an attempt to express the pronunciation of French exempt.
Common misspellings
Also misspelled as:
- eoxn
- exno
- exonn
- xeon
Misspelling Pattern Breakdown
How far each generated variant is from the correct spelling of exon - counted as single-character edits (an insertion, a deletion, or a substituted letter). The larger the bar, the easier the typo is to spot; one-edit slips are the ones that sneak past readers.
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 "exon", not the corpus desk frequency band.
Same letter count
Frequency-ranked English headwords with 4 letters (nearest by frequency rank).