knuckle
/ˈnʌkəl/
"knuckle" is a 7-letter English headword indexed on PlainSpell.
The verdict
“knuckle” is a moderately-common English word, ranked #21,840 in English word frequency and used as a noun.
- #21,840
- frequency rank, English
- 7
- letters
- 11
- tracked misspellings
- 1
- confusable pair
According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - Any of the joints between the bones of the fingers.
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 | knuckle |
| Language | English |
| Part of speech | Noun |
| IPA | /ˈnʌkəl/ |
| Letters | 7 |
| Frequency rank | #21,840 |
| Misspellings tracked | 11 |
| Confusable pairs | 1 |
| Source | Wiktionary (kaikki.org) |
Where “knuckle” sits in English frequency
Spelling & Dictionary Insight
The English entry for knuckle is 7 letters long, classified as a noun, and transcribed in the International Phonetic Alphabet as /ˈnʌkəl/. Corpus data places it at rank #21,840 in overall English word frequency, marking it as uncommon enough that many writers pause before typing it. Wiktionary records 9 distinct senses for this headword, so context determines which meaning a reader should apply.
Our generated misspelling index lists 11 likely wrong-spelling variants for knuckle, with forms such as "kknuckle", "kncukle", and "knnuckle". Each variant is a distinct typo pattern an edit-distance generator flags, typically a doubled-consonant error, a silent-letter drop, or a vowel substitution. It also participates in 1 confusable-pair relationship, "knuckles", where similar look or sound leads writers to substitute one word for another in context.
Etymologically, the entry records: From Middle English knokel (“finger joint”), from Old English cnucel (“the juncture of two bones; knuckle; joint”), from Proto-West Germanic *knukil, from Proto-Germanic *knukilaz (“knuckle, knot, bump”), as *knukô (“bone, joint”) + *-ilaz (diminutive suffi… The correct English form is knuckle, spelled K-N-U-C-K-L-E.
Definition
- 1Any of the joints between the bones of the fingers.
- 2A mechanical joint.
- 3The curved part of the cushion at the entrance to the pockets on a cue sports table.
- 4The kneejoint of a quadruped, especially of a calf; formerly, the kneejoint of a human being.
- 5A cut of meat of various kinds.
- 6The joint of a plant.
- 7A convex portion of a vessel's figure where a sudden change of shape occurs, as in a canal boat, where a nearly vertical side joins a nearly flat bottom.
- 8A contrivance, usually of brass or iron, and furnished with points, worn to protect the hand, to add force to a blow, and to disfigure the person struck; a knuckle duster.
- 9The rounded point where a flat changes to a slope on a piste.
Etymology
From Middle English knokel (“finger joint”), from Old English cnucel (“the juncture of two bones; knuckle; joint”), from Proto-West Germanic *knukil, from Proto-Germanic *knukilaz (“knuckle, knot, bump”), as *knukô (“bone, joint”) + *-ilaz (diminutive suffix). Cognate with Dutch knokkel (“knuckle”), Low German Knökel (“knuckle”), German Knöchel (“ankle, knuckle”), Old Norse knykill.
This word in other languages
Common misspellings
Also misspelled as: kknuckle,kncukle,knnuckle,knucckle,knuckel,knuckkle,knucklle,knuclke,knukcle,kunckle,nkuckle
Misspelling Pattern Breakdown
How far each generated variant is from the correct spelling of knuckle - 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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Using “knuckle”
The practical upshot for anyone who landed here from a spell-check.
- The one correct English spelling is K-N-U-C-K-L-E - every other letter order is a misspelling in standard orthography.
- Say it as /ˈnʌkəl/ (IPA); tap the speaker on the pronunciation badge to hear it where audio exists.
- Don't mix it up with “knuckles” - see the side-by-side comparison. knuckle vs knuckles
- 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.