Latin word hac comes from Proto-Indo-European *ǵʰi-ḱe

Detailed word origin of hac

Dictionary entry	Language	Definition
*ǵʰi-ḱe	Proto-Indo-European (ine-pro)
hic	Latin (lat)	This, these, used to refer to (a) person(s) or thing(s) close to the speaker, in contrast to ille, meaning that.
hac	Latin (lat)	So, thus, thusly. This way.

Words with the same origin as hac