fack
"fack" is a 4-letter English headword indexed on PlainSpell.
The verdict
“fack” is uncommon English (frequency #98,102 among 18,613 “F” headwords), classed as a noun. The kind of spelling people second-guess.
- #98,102
- frequency rank, English
- 18,613
- “F” headwords
According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - One of the four stomachs of a ruminating animal; rumen; paunch.
| Property | Value |
|---|---|
| Headword | fack |
| Language | English |
| Part of speech | Noun |
| Letters | 4 |
| Frequency rank | #98,102 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Where “fack” sits in English frequency
Rare enough to double-check
fack is uncommon English at frequency #98,102 among 18,613 “F” headwords, classed as anoun. Rarity is why readers land here mid-draft. Gloss: "One of the four stomachs of a ruminating animal; rumen; paunch.".
fack doesn't appear in our generated misspelling index, suggesting the orthography follows predictable English patterns. No close-neighbour confusable shows up for this headword in our dataset, since no other headword is close enough in sound or shape to pair with it.
Etymologically, the entry records: From Middle English *fak, fec, fæc (“space, compartment”), from Old English fæc (“space of time, while, division, interval; period of five years, lustrum”), from Proto-West Germanic *fak, from Proto-Germanic *faką (“division, department, space”), from Proto… The correct English form is fack, spelled F-A-C-K.
Definition
- 1One of the four stomachs of a ruminating animal; rumen; paunch.
Etymology
From Middle English *fak, fec, fæc (“space, compartment”), from Old English fæc (“space of time, while, division, interval; period of five years, lustrum”), from Proto-West Germanic *fak, from Proto-Germanic *faką (“division, department, space”), from Proto-Indo-European *peh₂ǵ-, *paǵ- (“to fasten, fix”). Cognate with West Frisian fek, Dutch vak (“section, compartment”), German Fach (“compartment”), Swedish fack (“compartment, box, department”), Latin pangō (“fasten, fix”). Doublet of Fach.
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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Using “fack”
The practical upshot for anyone who landed here from a spell-check.
- The one correct English spelling is F-A-C-K - every other letter order is a misspelling in standard orthography.
- Browse more English words and confusable pairs in the same reference. English words
Other uncommon English words near this rank
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.