Where does “-ad” come from?

-ad (Proto-Brythonic) comes from Proto-Brythonic -atus, from Proto-Brythonic -ātus.

Ancestry of “-ad”, step by step

Step	Language	Word	Meaning
1	Proto-Brythonic	-atus	—
2	Proto-Brythonic	-ātus	—

Words derived from “-ad”

Every word from Proto-Brythonic -ātus →

-ad — Etymology, Origin & Word History | Etymology Explorer