The story
- Latinarbiter
- Latinarbitror
- Latinarbitratio
- Old Frencharbitration
- Middle Englisharbitracion
- English todayarbitration
From Middle English arbitracion, borrowed from Old French arbitration, from Latin arbitratio, from arbitrari (“to arbitrate, judge”); see arbitrate.
Etymology from Wiktionary, CC BY-SA 4.0.