kappa
/ˈkæpə/
"kappa" is a 5-letter English headword indexed on PlainSpell.
The verdict
“kappa” is a moderately-common English word, ranked #15,847 in English word frequency and used as a noun.
- #15,847
- frequency rank, English
- 5
- letters
- 5
- tracked misspellings
- 14
- confusable pairs
According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - The tenth letter of the Greek alphabet.
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 | kappa |
| Language | English |
| Part of speech | Noun |
| IPA | /ˈkæpə/ |
| Letters | 5 |
| Frequency rank | #15,847 |
| Misspellings tracked | 5 |
| Confusable pairs | 14 |
| Source | Wiktionary (kaikki.org) |
Where “kappa” sits in English frequency
Spelling & Dictionary Insight
The English entry for kappa is 5 letters long, classified as a noun, and transcribed in the International Phonetic Alphabet as /ˈkæpə/. Corpus data places it at rank #15,847 in overall English word frequency, marking it as uncommon enough that many writers pause before typing it. Wiktionary records 2 distinct senses for this headword, so context determines which meaning a reader should apply.
Our generated misspelling index lists 5 likely wrong-spelling variants for kappa, with forms such as "akppa", "kapa", and "kapap". Every one of these variants traces to a single-character edit -- an added or dropped letter, a swapped consonant, or a vowel swap -- the kind of slip a spell-checker is built to catch. It also participates in 14 confusable-pair relationships, "kara", "kaya", "kata", and more, a pairing that trips writers up because the two words share enough sound or shape to blur together.
Etymologically, the entry records: Learned borrowing from Ancient Greek κάππα (káppa), ultimately from Proto-Semitic *kapp- (“palm, hand”). Doublet of kaph. The correct English form is kappa, spelled K-A-P-P-A.
Definition
- 1The tenth letter of the Greek alphabet.
- 2A measurement of the sensitivity of the value of an option to changes in the implied volatility of the price of the underlying asset.
Etymology
Learned borrowing from Ancient Greek κάππα (káppa), ultimately from Proto-Semitic *kapp- (“palm, hand”). Doublet of kaph.
This word in other languages
Common misspellings
Also misspelled as: akppa,kapa,kapap,kkappa,kpapa
Misspelling Pattern Breakdown
How far each generated variant is from the correct spelling of kappa - 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 “kappa”
The practical upshot for anyone who landed here from a spell-check.
- The one correct English spelling is K-A-P-P-A - every other letter order is a misspelling in standard orthography.
- Say it as /ˈkæpə/ (IPA); tap the speaker on the pronunciation badge to hear it where audio exists.
- Don't mix it up with “kara” - see the side-by-side comparison. kappa vs kara
- 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.