jolly

From Middle English joli, jolif (“merry, cheerful”), from Old French joli, jolif (“merry, joyful”) It is uncertain whether the Old French word is from Old Norse jól ("a midwinter feast, Yule", hence "fest-ive"), in which case, equivalent to yule + -ive, compare Dutch jolig (“happy, festive, frolicsome, jolly”), West Frisian joelich, joalich (“merry, jolly”), Middle High German jœlich (“hooting, jubilant”); or ultimately from Latin gaudeō (see etymology at joy), which fails to explain the presence of l in jolif. For the loss of final -f compare tardy, hasty, hussy, etc.