Where does “fornicatus” come from?

fornicatus (Latin) comes from Latin fornicor, from Latin fornix, from Latin furnus, from Proto-Italic fornos, from Proto-Indo-European gʷʰr̥-nós, from Indo-European *gʷʰer-.

Ancestry of “fornicatus”, step by step

Step	Language	Word	Meaning
1	Latin	fornicor	I fornicate, commit fornication
2	Latin	fornix	arch, vault; brothel
3	Latin	furnus	oven; bakery
4	Proto-Italic	fornos	—
5	Proto-Indo-European	gʷʰr̥-nós	—
6	Indo-European	*gʷʰer-	—

Every word from Indo-European *gʷʰer- →

fornicatus — Etymology, Origin & Word History | Etymology Explorer