cousin

/ˈkʌzn̩/

//ˈkʌzn̩// noun

"cousin" is a 6-letter English headword indexed on PlainSpell.

The verdict

“cousin” is a regularly-used English word, ranked #3,550 in English word frequency and used as a noun.

#3,550
frequency rank, English
6
letters
8
tracked misspellings
14
confusable pairs

According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - Chiefly with a qualifying word: Any relation (especially a distant one) who is not a direct ancestor or descendant but part of a person's extended family; a kinsman or kinswoman.

Visual similarity to commonly confused words

How many letter changes separate each confused pair (Levenshtein distance, normalized).

cousin vs cumin
67% similar
cousin vs cousins
86% similar
cousin vs coin
67% similar

Source: PlainSpell confusable corpus (Wiktionary, CC BY-SA).

Key facts for cousin
PropertyValue
Headwordcousin
LanguageEnglish
Part of speechNoun
IPA/ˈkʌzn̩/
Letters6
Frequency rank#3,550
Misspellings tracked8
Confusable pairs14
SourceWiktionary (kaikki.org)

Where “cousin” sits in English frequency

Every-word frequency runs from the handful of words we use constantly (left) to the long tail used once in a blue moon (right). cousin lands here:

#1#100#1K#10K#100K
← used constantlyrarely used →

Scale is logarithmic (each tick is 10× rarer). Source: FrequencyWords open word-frequency list.

Spelling & Dictionary Insight

The English entry for cousin is 6 letters long, classified as a noun, and transcribed in the International Phonetic Alphabet as /ˈkʌzn̩/. Corpus data places it at rank #3,550 in overall English word frequency, indicating it appears regularly in written and spoken text. Wiktionary records 10 distinct senses for this headword, so context determines which meaning a reader should apply.

Our generated misspelling index lists 8 likely wrong-spelling variants for cousin, with forms such as "ccousin", "cosuin", and "couisn". 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 14 confusable-pair relationships, "cumin", "cousins", "coin", and more, a pairing that trips writers up because the two words share enough sound or shape to blur together.

Etymologically, the entry records: The noun is derived from Middle English cosin, cosine, cosyn (“blood relative, kinsman or kinswoman; any relative; nephew or niece; first cousin; grandson or granddaughter; descendant; godchild or godparent, or a relative of a godchild or godparent; (figura… The correct English form is cousin, spelled C-O-U-S-I-N.

Definition

  1. 1
    Chiefly with a qualifying word: Any relation (especially a distant one) who is not a direct ancestor or descendant but part of a person's extended family; a kinsman or kinswoman.
  2. 2
    Chiefly with a qualifying word: Any relation (especially a distant one) who is not a direct ancestor or descendant but part of a person's extended family; a kinsman or kinswoman.
  3. 3
    Chiefly with a qualifying word: Any relation (especially a distant one) who is not a direct ancestor or descendant but part of a person's extended family; a kinsman or kinswoman.
  4. 4
    A person of an ethnicity or nationality regarded as closely related to someone of another ethnicity or nationality.
  5. 5
    Used as a term of address for someone whom one is close to; also, (preceding a first name, sometimes capitalized as Cousin) a title for such a person.
  6. 6
    Used by a monarch to address another monarch, or a noble; specifically (British) in commissions and writs by the Crown: used in this way to address a viscount or another peer of higher rank.
  7. 7
    Something kindred or related to something else; a relative.
  8. 8
    A female sexual partner who is not a person's wife; specifically, a prostitute.
  9. 9
    A person who is swindled; a dupe.
  10. 10
    A person who womanizes; a seducer, a womanizer.

Etymology

The noun is derived from Middle English cosin, cosine, cosyn (“blood relative, kinsman or kinswoman; any relative; nephew or niece; first cousin; grandson or granddaughter; descendant; godchild or godparent, or a relative of a godchild or godparent; (figurative) closely related or similar thing”) [and other forms], and then: * from Anglo-Norman cosen, cosin [and other forms], Middle French cosin, and Old French cosin (“collateral male relative more distant than one’s brother; form of address used by a monarch to male monarchs or nobles”) [and other forms] (modern French cousin); and * from Anglo-Norman cosine, Middle French cosine, and Old French cosine (“collateral female relative more distant than one’s sister; form of address used by a monarch to female monarchs or nobles”) [and other forms] (modern French cousine), from Latin cōnsobrīnus (“maternal cousin; first cousin; relation”) (possibly through Vulgar Latin *cōsuīnus, from *cōsobīnus), from con- (prefix denoting a bringing together of several objects) + sobrīnus (“maternal cousin; sister’s son; any nephew”) (from a noun use of Proto-Italic *swezrīnos (“of or belonging to a sister”, adjective) (with the first syllable influenced by Latin soror (“sister”)), ultimately from Proto-Indo-European *swésōr (“sister”), possibly from *swé (“self”) + *h₁ésh₂r̥ (“blood”) (that is, a woman of one’s own blood) or *-sōr (feminine suffix)). The verb is derived from the noun.

This word in other languages

Common misspellings

Also misspelled as: ccousin,cosuin,couisn,cousinn,cousni,coussin,cuosin,ocusin

Misspelling Pattern Breakdown

How far each generated variant is from the correct spelling of cousin - 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.

ccousin1cosuin2couisn2cousinn1cousni2coussin1cuosin2ocusin2
Edit distance from "cousin"

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

How do you spell "cousin"?
"cousin" is spelled C-O-U-S-I-N. The IPA pronunciation is /ˈkʌzn̩/.
What does "cousin" mean?
As a noun, "cousin" means: Chiefly with a qualifying word: Any relation (especially a distant one) who is not a direct ancestor or descendant but part of a person's extended family; a kinsman or kinswoman.
What words are commonly confused with "cousin"?
"cousin" is commonly confused with "cumin", "cousins", "coin". These words look or sound similar but have different meanings. PlainSpell provides detailed comparisons for each pair.
How do you pronounce "cousin"?
The IPA (International Phonetic Alphabet) transcription for "cousin" is /ˈkʌzn̩/. Click the speaker icon on the pronunciation badge above to hear it spoken aloud where audio is available.
What is the origin of the word "cousin"?
The noun is derived from Middle English cosin, cosine, cosyn (“blood relative, kinsman or kinswoman; any relative; nephew or niece; first cousin; grandson or granddaughter; descendant; godchild or godparent, or a relative of a godchild or godparen... See the full etymology section above for more details.
Is PlainSpell free to use?
Yes, PlainSpell is a completely free word reference. You can look up definitions, pronunciations, confusable pairs, homophones, and spelling corrections across 5 languages without any sign-up or subscription.

Using “cousin”

The practical upshot for anyone who landed here from a spell-check.

  • The one correct English spelling is C-O-U-S-I-N - every other letter order is a misspelling in standard orthography.
  • Say it as /ˈkʌzn̩/ (IPA); tap the speaker on the pronunciation badge to hear it where audio exists.
  • Don't mix it up with “cumin” - see the side-by-side comparison. cousin vs cumin
  • 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.

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list FrequencyWords open word-frequency list