noun, noun or participle which takes 'suru', intransitive verb
bruxism; involuntary tooth grinding
Medical and everyday term for grinding one's teeth, especially during sleep. Often used with する to describe the action.
夜中に歯ぎしりをしていると言われた。
I was told that I grind my teeth at night.
歯ぎしりがひどくて、朝起きる
My bruxism is so bad that my jaw hurts when I wake up in the morning.
noun, noun or participle which takes 'suru', intransitive verb
grinding one's teeth in anger or frustration
Describes the conscious or unconscious act of clenching or grinding teeth due to strong negative emotions like anger, resentment, or vexation. Often used in literary or dramatic contexts.
彼は悔しさに歯ぎしりをして、拳を握りしめた。
He ground his teeth in frustration and clenched his fists.
上司に叱られて、歯ぎしりしながら耐えた。
Scolded by his boss, he endured it while grinding his teeth.