penancing

noun

1. R.C.Ch., Eastern Orthodox Ch.
   1. a sacrament involving the confession of sin, repentance, and acceptance of the satisfaction imposed, followed by absolution by a priest
   2. the satisfaction imposed, as the recital of certain prayers
2. any act of reparation, self-punishment, etc. done in repentance for a sin or wrongdoing

transitive verb penanced, penancing