motherfuck
"motherfuck" is a 10-letter English headword indexed on PlainSpell.
The verdict
“motherfuck” is uncommon English (frequency #95,158 among 36,575 “M” headwords), classed as an interjection. The kind of spelling people second-guess.
- #95,158
- frequency rank, English
- 36,575
- “M” headwords
According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - A more intense form of fuck.
| Property | Value |
|---|---|
| Headword | motherfuck |
| Language | English |
| Part of speech | Interjection |
| Letters | 10 |
| Frequency rank | #95,158 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Where “motherfuck” sits in English frequency
Rare enough to double-check
motherfuck is uncommon English at frequency #95,158 among 36,575 “M” headwords, classed as aninterjection. Rarity is why readers land here mid-draft. Gloss: "A more intense form of fuck.".
We couldn't generate a plausible misspelling set for motherfuck, a sign its spelling follows regular English conventions. No close-neighbour confusable shows up for this headword in our dataset, a sign it's visually distinctive enough not to be mixed up with another word.
Etymologically, the entry records: Back-formation from or clipping of motherfucker. The correct English form is motherfuck, spelled M-O-T-H-E-R-F-U-C-K.
Definition
- 1A more intense form of fuck.
Etymology
Back-formation from or clipping of motherfucker.
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 “motherfuck”
The practical upshot for anyone who landed here from a spell-check.
- The one correct English spelling is M-O-T-H-E-R-F-U-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.