鬼(おに)

おに
noun
demon, ogre, oni
culture
1. demon, ogre
A supernatural creature in Japanese folklore.
To play tag.
I read a story where demons appear.
Momotaro defeated the demons.
During Setsubun, we scatter beans to drive away demons.
When I was a child, stories about demons were so scary that I couldn't sleep alone at night.
2. fierce person
Someone who is very strict or scary.
仕事(しごと)の鬼(おに)だ。
A demon for work (a workaholic).
The teacher is very strict.
I steeled myself and said something harsh.
That coach is a demon for practice and gives harsh instruction every day.
He is called a workaholic and sometimes comes to the office even on his days off.

鬼(おに) refers to Japanese demons.

CULTURAL NOTE (folklore):
Oni are typically depicted with horns, wild hair, and carrying iron clubs.

Common expressions

CULTURAL NOTE (Setsubun):
During Setsubun, people throw 豆(まめ) to drive away 鬼(おに).