- let oneself go
- let oneself go (informal)1. To allow one's appearance, lifestyle, etc to deteriorate2. To act without restraint• • •Main Entry: ↑let
* * *
1) act in an unrestrained or uninhibited wayyou need to unwind and let yourself go
2) become careless or untidy in one's habits or appearancehe's really let himself go since my mother died
Useful english dictionary. 2012.