Where does “ఎనిమిది” come from?

ఎనిమిది (Telugu) comes from Proto-Dravidian *eṇ.

ఎనిమిది (Telugu): 8; eight

Definitions

Step	Language	Word	Meaning
1	Proto-Dravidian	*eṇ	—

ఎనిమిది — Etymology, Origin & Word History | Etymology Explorer