to give something one's all
01
to put in as much effort as possible into something one is doing
![to [give] {sth} {one's} all definition and meaning](https://cdn.langeek.co/photo/43052/original/?type=jpeg "to [give] {sth} {one's} all definition and meaning")
例
Give it your all, and you wo n't be sorry later.
It was n't easy being a substitute father but Harry gave it his all.
to put in as much effort as possible into something one is doing
