Where does “deien” come from?

deien (Old French) comes from Latin decānus, from Latin decem, from Latin -nus, from Proto-Italic -nos, from Proto-Indo-European -nós — Creates verbal adjectives from roots.

Ancestry of “deien”, step by step

deien traces back through two separate lines of ancestry.

via Latin decānus

StepLanguageWordMeaning
1Latindecānuschief of ten people (in various contexts)
2Latindecemten; 10
3Latin-nus-an
4Proto-Italic-nosCreates verbal adjectives from verb stems
5Proto-Indo-European-nósCreates verbal adjectives from roots

via Late Latin decanus

StepLanguageWordMeaning
1Late Latindecanuschief of ten people; dean; chief of ten people;...

Words derived from “deien

Every word from Proto-Indo-European -nós