Where does “hyt” come from?

hyt (Middle Welsh) comes from Old Welsh hit, from Proto-Celtic *siti- — length.

Ancestry of “hyt”, step by step

Step	Language	Word	Meaning
1	Old Welsh	hit	until
2	Proto-Celtic	*siti-	length

Words derived from “hyt”

Every word from Proto-Celtic *siti- →Every word from Old Welsh hit →