Where does “حفار” come from?

حفار (Hijazi Arabic) comes from Arabic ف, from Arabic نَفِدَ — to run out, to give out.

حفار (Hijazi Arabic): excavator

Definitions

Step	Language	Word	Meaning
1	Arabic	ف	then, and then; and so, thus, hence, therefore;...
2	Arabic	نَفِدَ	to run out, to give out

حفار — Etymology, Origin & Word History | Etymology Explorer