Oni

//ˈəʊni// name, noun

name, noun ·Uncommon ·Advanced level

Definitions

Noun
  1. 1
    A Japanese evil spirit or demon.

    "ONI 鬼. Generic name for devils, the representation of which in art is quite a common feature. Onis have claws, a square head with two horns, sharp teeth, and malignant eyes surmounted by big eyebrows; occasionally they wear trousers of tiger skin."

  2. 2
    the military intelligence agency that provides for the intelligence and counterintelligence and investigative and security requirements of the United States Navy wordnet
Proper Noun
  1. 1
    Initialism of Office of Naval Intelligence. US, abbreviation, alt-of, initialism

Synonyms

All synonyms
apparitionappearanceastralbansheecontroldeparted spirit

Example

More examples

"An oni will appear inevitably to those who fear oni."

Etymology

From Japanese 鬼 (oni).

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.