One deputed or authorized to perform the functions of another; a substitute in office; a deputy.
- The priest of a parish in the Church of England who receives a stipend or salary but does not receive the tithes of a parish.
- A cleric in charge of a chapel in the Episcopal Church of the United States.
- A cleric acting in the place of a rector or bishop in the Anglican Communion generally.
- Roman Catholic Church A priest who acts for or represents another, often higher-ranking member of the clergy.