v. 1. To free from ties or connections, cut the fastenings of. The thief hastily cut the boat loose from its anchor.
Compare: LET LOOSE(1a). 2. informal To break away from control; get away and be free. The boy left home and cut loose from his parents' control. 3. informal To behave freely or wildly. 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 .