Where does “cásáil” come from?

cásáil (Irish) comes from Irish -áil, from Irish fáil, from Old Irish foil, from Proto-Celtic wali-, from Proto-Indo-European wēl- — to see, perceive.

cásáil (Irish): encase, case; verbal noun of cásáil; casing

Definitions

encase, case; verbal noun of cásáil; casing

Ancestry of “cásáil”, step by step

Step	Language	Word	Meaning
1	Irish	-áil	suffix used to form verbal nouns; API; suffix...
2	Irish	fáil	verbal noun of faigh; possession; receipt,...
3	Old Irish	foil	sty
4	Proto-Celtic	wali-	—
5	Proto-Indo-European	wēl-	to see, perceive

Every word from Proto-Indo-European wēl- →Every word from Irish -áil →Every word from Proto-Celtic wali- →