Verb: fess up
Usage: informal
Usage: informal
- Admit or acknowledge a wrongdoing or error
"the writer of the anonymous letter fessed up after they identified his handwriting";
- make a clean breast of, own up, cop [N. Amer, informal], cop to [N. Amer, informal], own, come clean [informal], fess [informal]
Derived forms: fessed up, fesses up, fessing up