Bullying or teasing — repeatedly harming, harassing, or mistreating someone, often referring to school or workplace harassment. (Usually written in kana: いじめ.)
学校でのいじめは深刻な社会問題だ。
Bullying at school is a serious social problem.
彼女は昔、クラスでいじめを受けていた。
She used to be bullied in class.
いじめを見たら大人に相談してください。
If you see bullying, please tell an adult.