exfil
"exfil" is a 5-letter English headword indexed on PlainSpell.
The verdict
“exfil” is uncommon English (outside the top frequency list), classed as a noun. The kind of spelling people second-guess.
- Unranked
- below top-frequency English
- 5
- letters
According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - Clipping of exfiltration (“the act of going out of a place”).
| Property | Value |
|---|---|
| Headword | exfil |
| Language | English |
| Part of speech | Noun |
| Letters | 5 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Where “exfil” sits in English frequency
Rare enough to double-check
exfil is uncommon English outside the top frequency list, classed as anoun. Rarity is why readers land here mid-draft. 2 senses are on record.
We couldn't generate a plausible misspelling set for exfil, suggesting the orthography follows predictable English patterns. It is not paired with a close-neighbour confusable in our dataset, since its spelling is unusual enough that it doesn't cluster with a lookalike.
This headword's origin isn't recorded in our source data, so its spelling pattern is best understood through pronunciation rather than a traceable origin. The correct English form is exfil, spelled E-X-F-I-L.
Definition
- 1Clipping of exfiltration (“the act of going out of a place”).
- 2Clipping of exfiltration (“covert extraction of data”).
Definitions, pronunciation, and etymology for this entry are drawn from Wiktionary via the kaikki.org structured extract (CC BY-SA). See the methodology for how each field is sourced and updated.
Frequently Asked Questions
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Using “exfil”
The practical upshot for anyone who landed here from a spell-check.
- The one correct English spelling is E-X-F-I-L - every other letter order is a misspelling in standard orthography.
- Browse more English words and confusable pairs in the same reference. English words
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.