Where does “slanid” come from?

slanid (Manx) comes from Manx slane, from Old Irish slán, from Proto-Celtic *slānos, from Proto-Indo-European sōlh₂- — mercy, comfort; comfort, mercy.

slanid (Manx): completeness; entirety

Definitions

completeness; entirety

Ancestry of “slanid”, step by step

Step	Language	Word	Meaning
1	Manx	slane	well, sane, unhurt; whole, entire, undivided,...
2	Old Irish	slán	healthy, sound; safe; whole
3	Proto-Celtic	*slānos	whole
4	Proto-Indo-European	sōlh₂-	mercy, comfort; comfort, mercy

Every word from Proto-Indo-European sōlh₂- →Every word from Proto-Celtic *slānos →Every word from Old Irish slán →