Where does “ceathrachadú” come from?

ceathrachadú (Irish) comes from Irish ceathracha, from Old Irish cethorcho, from Proto-Celtic *kʷetrVkonts, from Proto-Indo-European kʷétwr̥dḱomt, from Proto-Indo-European kʷetwr̥-, from Proto-Indo-European kʷetwóres, from Proto-Indo-European kʷe- — and.

ceathrachadú (Irish): fortieth

Definitions

fortieth

Ancestry of “ceathrachadú”, step by step

Step	Language	Word	Meaning
1	Irish	ceathracha	—
2	Old Irish	cethorcho	—
3	Proto-Celtic	*kʷetrVkonts	—
4	Proto-Indo-European	kʷétwr̥dḱomt	forty
5	Proto-Indo-European	kʷetwr̥-	four, fourfold
6	Proto-Indo-European	kʷetwóres	four
7	Proto-Indo-European	kʷe-	and

Every word from Proto-Indo-European kʷe- →

ceathrachadú — Etymology, Origin & Word History | Etymology Explorer