Where does “December” come from?

December (Middle English) comes from Old French decembre, from Latin december, from Latin decem, from Latin -nus, from Proto-Italic -nos, from Proto-Indo-European -nós — Creates verbal adjectives from roots.

Ancestry of “December”, step by step

StepLanguageWordMeaning
1Old FrenchdecembreDecember
2Latindecemberof December; December
3Latindecemten; 10
4Latin-nus-an
5Proto-Italic-nosCreates verbal adjectives from verb stems
6Proto-Indo-European-nósCreates verbal adjectives from roots

Words derived from “December”

Every word from Proto-Indo-European -nós →Every word from Latin -nus →Every word from Latin decem →