How is “let loose” used?

In Heat (1995), one line is: “What I don't understand is why I can't cut loose of you.”

Which movie is “let loose” from?

The clip at the top of this page is from Heat (1995).

What I don't understand is why I can't cut loose of you.

7 作品で登場 · 1 本目

to do sth or to happen in a way that is not controlled; to make a noise or remark, especially in a loud or sudden way

くだけた · 14 本の映画に登場

1
くだけた
to do sth or to happen in a way that is not controlled
Teenagers need a place to let loose.
2
let loose sth
to make a noise or remark, especially in a loud or sudden way
She let loose a stream of abuse.
3
let sb / sth loose
to free sb / sth from whatever holds them / it in place
She let her hair loose and it fell around her shoulders.
4
let sb / sth loose
to give sb complete freedom to do what they want in a place or situation
He was at last let loose in the kitchen.

定義：Oxford Advanced Learner's Dictionary 第 9 版