someone who assists a priest or minister in a liturgical service; a cleric ordained in the highest of the minor orders in the Roman Catholic Church but not in the Anglican Church or the Eastern Orthodox Churches
AIDE
an officer who acts as military assistant to a more senior officer
someone who acts as assistant
DEPUTY
a member of the lower chamber of a legislative assembly (such as in France)
an assistant with power to act when his superior is absent
someone authorized to exercise the powers of sheriff in emergencies
a person appointed to represent or act on behalf of others
HELPER
a person who helps people or institutions (especially with financial help)
a person who contributes to the fulfillment of a need or furtherance of an effort or purpose; "my invaluable assistant"; "they hired additional help to finish the work"