Where does “quemadmodum” come from?

quemadmodum (Latin) comes from Latin qui, from Old Latin quei, from Proto-Italic kʷoi, from Proto-Indo-European kʷós — who.

quemadmodum (Latin): how, in what manner; as, just as, as when; for...

Definitions

quemadmodum traces back through two separate lines of ancestry.

Step	Language	Word	Meaning
1	Latin	qui	who, that, which; anyone, any; who, what, which
2	Old Latin	quei	who, what, that, which
3	Proto-Italic	kʷoi	who, what
4	Proto-Indo-European	kʷós	who

Step	Language	Word	Meaning
1	Latin	ad	toward, to; up to; near, by, close by, at, to
2	Proto-Italic	ad	toward, to, on, up to, for
3	Proto-Indo-European	h₂éd	to, at