durative

The story

1. Old French · derived fromduratif“lasting continuously (for a certain time)”
2. French · borrowed fromduratif
3. English todaydurative

From duration + -ive. Alternatively, borrowed from French duratif, from Old French duratif (“lasting continuously (for a certain time)”), via Anglo-Norman French, and existing in the form duratif from about the twelfth through the fourteenth centuries, when the spelling was altered to durative under the influence of the literary Neolatin movement. Analogous to dure (“to last, to continue”) + -ive.