The story
- Latin · derived fromiūrātor, iūrātōrem
- Old French · derived fromjureor
- Anglo-Norman · derived fromjurour
- Middle English · inherited fromjurour
- English todayjuror
From Middle English jurour, jurrour, borrowed from Anglo-Norman jurour and Old French jureor, from the verb jurer (“to swear”), or possibly from Latin iūrātor, iūrātōrem, whence the English doublet jurator.
Etymology from Wiktionary, CC BY-SA 4.0.