Where does “anrupa” come from?

anrupa (Makasar) comes from Makasar rupa, from Sanskrit रूप, from Sanskrit रूप् — to form, shape.

Ancestry of “anrupa”, step by step

Step	Language	Word	Meaning
1	Makasar	rupa	outward appearance; form; shape
2	Sanskrit	रूप	outward appearance, color, form, shape; right...
3	Sanskrit	रूप्	to form, shape