Where does “నమ్మకమైన” come from?

నమ్మకమైన (Telugu) comes from Telugu నమ్మకము, from Telugu నమ్ము — to believe; to trust.

నమ్మకమైన (Telugu): Of or pertaining to trust - trusted

Definitions

Step	Language	Word	Meaning
1	Telugu	నమ్మకము	trust, reliance, assurance, confidence, belief,...
2	Telugu	నమ్ము	to believe; to trust

నమ్మకమైన — Etymology, Origin & Word History | Etymology Explorer