Where does “grassia” come from?

grassia (Vulgar Latin) comes from Latin crassus, from Old Latin cartsus, from Proto-Italic kartsus, from Proto-Indo-European kr̥t-sú-s, from Proto-Indo-European kert-, from Proto-Turkic *keŕ-.

Ancestry of “grassia”, step by step

Step	Language	Word	Meaning
1	Latin	crassus	dense, thick, solid; fat, gross, plump;...
2	Old Latin	cartsus	—
3	Proto-Italic	kartsus	—
4	Proto-Indo-European	kr̥t-sú-s	—
5	Proto-Indo-European	kert-	times; to weave, twist together; time
6	Proto-Turkic	*keŕ-	—

Words derived from “grassia”

grease
greaser
greasewood
greaseproof
greasepaint
degreaser
degrease
greaseball
greaseless
grece
greaseboard
greasepainted
regrease
greaselike
greaseburger
greasest
grease-monkey
greasebomb
greasable
greasegrass
greaseth
ungrease
pregrease
begrease

Every word from Proto-Turkic *keŕ- →

grassia — Etymology, Origin & Word History | Etymology Explorer