Where does “ʼaṃnāc” come from?

ʼaṃnāc (Old Khmer) comes from Old Khmer ʼāca.

Ancestry of “ʼaṃnāc”, step by step

Step	Language	Word	Meaning
1	Old Khmer	ʼāca	—

ʼaṃnāc — Etymology, Origin & Word History | Etymology Explorer