Английский словарь американских идиом - cut loose

{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).