The story
- Vulgar Latin · derived from*ad retro
- Old French · derived fromarere
- Middle English · inherited fromarere
- English todayarrear
From Middle English arere, from Old French arere, from Vulgar Latin *ad retro (literally “to the rear”).
First known use, by meaning
- 14th–16th c. Towards the rear, backwards.
- 15th–19th c. Behind time; overdue.
Etymology from Wiktionary, CC BY-SA 4.0.