Where does “dúinn” come from?

dúinn (Irish) comes from Old Irish dúnn, from Old Irish sinni, from Old Irish sisni, from Old Irish snisni, from Proto-Celtic snisni, from Proto-Celtic snīs, from Proto-Indo-European nō̆s — we.

dúinn (Irish): first-person plural of do: to/for us

Definitions

first-person plural of do: to/for us

Ancestry of “dúinn”, step by step

Step	Language	Word	Meaning
1	Old Irish	dúnn	first-person plural of do: to us
2	Old Irish	sinni	we
3	Old Irish	sisni	we, us
4	Old Irish	snisni	we
5	Proto-Celtic	snisni	—
6	Proto-Celtic	snīs	we
7	Proto-Indo-European	nō̆s	we

Words derived from “dúinn”

dúinne

Every word from Proto-Indo-European nō̆s →Every word from Proto-Celtic snīs →Every word from Proto-Celtic snisni →