koi
/kɔɪ/noun
koi is spelled K-O-I: 3 letters. It appears 1.2 times per million words in written English, the 26,420th most frequent word form (wordfreq, 2021 data). As a noun, koi means “Ornamental domesticated varieties of the Amur carp (Cyprinus rubrofuscus), of Japan and eastern Asia with red-gold or white coloring” (English Wiktionary, September 2026).
How many letters and syllables are in koi?
| Letters | 3: K-O-I |
|---|---|
| In writing | 1.2 times per million words; the 26,420th most frequent word form |
| Wrong spellings searched | none measured in search |
| Pairs people search | |
| Sounds like | |
| Same letters |
Sources: letters and syllables from the English Wiktionary's hyphenation or pronunciation; written frequency: wordfreq 3.1 (a 2021 snapshot of Wikipedia, subtitles, news, books, web text and social media); Bing searches in the United States: the average month from September 2025 to August 2026 (Microsoft Advertising keyword data through DataForSEO, read September 30, 2026); rhymes and same-letter words are computed by PlainSpell from its own word list.
How common is koi?
Koi appears 1.2 times per million words in written English, the 26,420th most frequent word form in the list.
Source: written frequency: wordfreq 3.1 (a 2021 snapshot of Wikipedia, subtitles, news, books, web text and social media).
How do you pronounce koi?
- /kɔɪ/
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract). Recordings: En-us-coy.ogg, En-au-coy.ogg, Wikimedia Commons (author and licence on each file's page).
Words people confuse with koi
Word pairs people search, with the monthly searches for “a vs b” (G: Google, B: Bing, United States).
Sounds like: coy (Wiktionary's homophone list; some hold only in some accents).
Sources: Google and Bing searches (September 2025 to August 2026, through DataForSEO); English Wiktionary (homophones, alternative spellings).
What rhymes with koi?
No other word on PlainSpell ends in the same sounds as koi.
Spelled with the same letters in another order: oik.
Computed by PlainSpell from the pronunciations in the English Wiktionary (dump of September 2, 2026): a rhyme shares every sound from the last stressed vowel to the end; ordered by written frequency (wordfreq 3.1).
What does koi mean?
The meanings the English Wiktionary records, quoted as written there (source below).
noun
- 1
Ornamental domesticated varieties of the Amur carp (Cyprinus rubrofuscus), of Japan and eastern Asia with red-gold or white coloring.
noun
- 1
Abbreviation of Kepler/K1/K2 object of interest.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
Koi in Spanish, French, German and Portuguese
In the sense variety of carp:
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract). Translations are Wiktionary's, by sense; a linked word has its own PlainSpell page.
Where does koi come from?
Borrowed from Japanese 鯉 (koi).
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).