acharya, achar
sk आचार्य, "he who knows the sacred writings" | kh អាចារ្យ achar
Knowledgeable person, officiant, spiritual preceptor/guide, religious teacher. Royal acharyas are named in pre-Angkorian and Angkorian inscriptions.
In modern Cambodia, the Achar is the officiant who communicate with the monks performing rituals for the community.