Persona Non Grata: Unacceptable or unwelcome person
Post partum: After childbirth
Post-mortem: Examination of a body after death; autopsy
Prima Facie: At first sight, clear and evident
Prior: First, Primary, Priority
Pro and con: For and against
Pro Bono: Done or donated without charge; free
R.I.P. (Requiescat in pace): Rest in Peace