Where does “दूळभ” come from?

दूळभ (Sanskrit) comes from Proto-Indo-Aryan duẓḍábʰas, from Proto-Indo-Iranian duždábʰas, from Proto-Indo-European dus-dʰébʰos.

दूळभ (Sanskrit): difficult to deceive

Definitions

Step	Language	Word	Meaning
1	Proto-Indo-Aryan	duẓḍábʰas	—
2	Proto-Indo-Iranian	duždábʰas	—
3	Proto-Indo-European	dus-dʰébʰos	—

दूळभ — Etymology, Origin & Word History | Etymology Explorer