-confession-

meaning:
verb [I or T]
1 to admit that you have done something wrong or something that you feel guilty or bad about:
[+ that] She confessed to her husband that she had sold her wedding ring.
He confessed to sleeping/having slept through most of the film.
He has confessed to the murder.
[+ (that)] I have to confess (that), when I first met your husband, I didn't think he was very bright.
I found it all very confusing, I must confess.
The director confessed himself (to be) puzzled by the company's losses.

2 in the Christian religion, especially the Roman Catholic Church, to tell God or a priest what you have done wrong so that you can be forgiven:
to confess your sins