Where does “పాడేరు” come from?

పాడేరు (Telugu) comes from Telugu ఏరు, from Proto-Dravidian *cēr.

Ancestry of “పాడేరు”, step by step

Step	Language	Word	Meaning
1	Telugu	ఏరు	A river; to pick up one after another
2	Proto-Dravidian	*cēr	—

పాడేరు — Etymology, Origin & Word History | Etymology Explorer