The story
- Medieval Latin · derived fromincīsīvus
- English todayincisive
Late Middle English (in the sense “cutting, penetrating”), borrowed from Medieval Latin incīsīvus, from incīdō (“to cut in, cut through”) + -īvus (“-ive”, adjectival suffix). Compare Middle French incisif.
Etymology from Wiktionary, CC BY-SA 4.0.