November
Old English, from Latin, from novem ‘nine’ (being originally the ninth month of the Roman year).
wiktionary
From Middle English Novembre, from Old French novembre, from Latin november(“ninth month”), from Latin novem, from Proto-Indo-European *h₁néwn̥(“nine”); + Latin -ber, from -bris, an adjectival suffix; November was the ninth month in the Roman calendar
etymonline
November
c. 1200, from Old French novembre and directly from Latin November (also Novembris (mensis)), from novem "nine" (see nine). The ninth month of the Roman calendar, which began in March. For -ber see December. In Old English, it was Blotmonað "month of sacrifice," literally "blood-month," the time when the early Saxons prepared for winter by sacrificing animals, which they then butchered and stored for food.
