Where does “díummus” come from?

díummus (Old Irish) comes from Old Irish mess, from Proto-Celtic messus, from Proto-Indo-European mēd-, from Proto-Indo-European med- — to measure; to give advice; healing.

díummus (Old Irish): pride, arrogance

Definitions

pride, arrogance

Ancestry of “díummus”, step by step

díummus traces back through two separate lines of ancestry.

via Old Irish mess

Step	Language	Word	Meaning
1	Old Irish	mess	judgement; animal feed; tree-fruit
2	Proto-Celtic	messus	measurement, judgement
3	Proto-Indo-European	mēd-	to measure
4	Proto-Indo-European	med-	to measure; to give advice; healing

via Old Irish dí

Step	Language	Word	Meaning
1	Old Irish	dí	third-person singular feminine of di: from her;...
2	Proto-Celtic	dī	from
3	Proto-Indo-European	de	Emphatic or contrastive particle, and, but;...

Every word from Proto-Indo-European med- →Every word from Proto-Indo-European mēd- →Every word from Proto-Celtic messus →