The story
- Latin · derived fromfēria“weekday”
- Medieval Latin · derived fromfēriālis
- Middle English · inherited fromferial
- English todayferial
From Middle English ferial, from Medieval Latin fēriālis, from Latin fēria (“weekday”) (whence the first sense), fēriae (“holidays”) (whence the second).
Etymology from Wiktionary, CC BY-SA 4.0.