The story
- Proto-Indo-European*déḱm̥
- Proto-Italic*dekəm
- Latindecem
- LatinDecember
- Latindecembrem
- Old Frenchdecembre
- Middle EnglishDecember
- English todayDecember
From Middle English December, Decembre, from Old French decembre, from Latin december (“tenth month”), from Latin decem (“ten”); + Latin -ber, from -bris, an adjectival suffix; December was the tenth month in the Roman calendar.
Words from the same roots
Latindecem all →
doyendecem-decempedaldecuple
Etymology from Wiktionary, CC BY-SA 4.0.