cut loose {v.}
The thief hastily cut the boat loose from its anchor.
Compare: LET LOOSE (1a).
The boy left home and cut loose from his parents' control.
The men had come to the convention to have a good time, and they really cut loose.
When he got the news of his job promotion, Jack cut loose with a loud "Yippee!"
Compare: LET GO (6). Categories: behave informal verb