oni
/ˈoʊni/noun
oni is spelled O-N-I: 3 letters. It appears about once in every 2 million words in written English, the 36,176th most frequent word form (wordfreq, 2021 data). As a noun, oni means “A Japanese evil spirit or demon” (English Wiktionary, September 2026). The plural of oni is onis.
How many letters and syllables are in oni?
| Letters | 3: O-N-I |
|---|---|
| In writing | about once in every 2 million words; the 36,176th most frequent word form |
| Wrong spellings searched | none measured in search |
| Rhymes with | |
| 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); rhymes and same-letter words are computed by PlainSpell from its own word list.
How common is oni?
Oni appears about once in every 2 million words in written English, the 36,176th 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 oni?
- UK /ˈəʊni/
- US /ˈoʊni/
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract). Recordings: LL-Q1860_(eng)-Vealhurl-oni.wav, Wikimedia Commons (author and licence on each file's page).
What rhymes with oni?
The 12 most written words on PlainSpell end in the same sounds as oni from its last stressed vowel (/oʊni/):
Spelled with the same letters in another order: ion.
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).
Forms of oni
- onis plural
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
What does oni mean?
The meanings the English Wiktionary records, quoted as written there (source below).
noun
- 1
A Japanese evil spirit or demon.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
Where does oni come from?
From Japanese 鬼 (oni).
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).