Where does “దాహము” come from?

దాహము (Telugu) comes from Sanskrit दाह, from Sanskrit दह्, from Proto-Indo-European dʰegʷʰ- — to burn; warm, hot.

దాహము (Telugu): thirst

Definitions

Step	Language	Word	Meaning
1	Sanskrit	दाह	burning, combustion, conflagration, heat; place...
2	Sanskrit	दह्	to burn, consume by fire, scorch, roast; to...
3	Proto-Indo-European	dʰegʷʰ-	to burn; warm, hot

దాహము — Etymology, Origin & Word History | Etymology Explorer