Where does “పదునైదు” come from?

పదునైదు (Telugu) comes from Telugu ఐదు, from Proto-Dravidian *caymtu.

పదునైదు (Telugu): fifteen

Definitions

Step	Language	Word	Meaning
1	Telugu	ఐదు	5; five
2	Proto-Dravidian	*caymtu	—

పదునైదు — Etymology, Origin & Word History | Etymology Explorer