The story
- Latin · derived fromoperātīvus
- Middle French · derived fromoperatif
- Middle English · inherited fromoperative
- English todayoperative
From Middle English operative, operatyfe, from Middle French operatif (modern French opératif) or its etymon Latin operātīvus. By surface analysis, operate + -ive.
Etymology from Wiktionary, CC BY-SA 4.0.