- let oneself go
- let oneself go1. Fig. to become less constrained; to get excited and have a good time. •
I love to dance and just let myself go.
•Let yourself go, John. Learn to enjoy life.
2. Fig. to let one's appearance and health suffer. •When I was depressed, I let myself go and was really a mess.
•He let himself go and gained 30 pounds.
* * *See: LET GO(6).
Dictionary of American idioms. 2013.