think outside the box
型にはまらない考え方をする、既成概念にとらわれない考え方をする
Ex
- Let’s think outside the box.
- I was always thinking outside the box.
Reference source
- https://hapaeikaiwa.com/2014/03/12/「think-outside-the-box(創意工夫)」の使い方/
- https://trilingue.exblog.jp/4687785/