expression, godan verb (-su)
give one's all; do one's utmost
Emphasizes total dedication of body and spirit; often used in contexts of effort, sacrifice, or devotion.
彼は家族のために身を尽くして働いた。
He worked with all his might for his family.
このプロジェクトに身を尽くす覚悟
I am prepared to give my all to this project.