Definitions

1. adjective

lasting or continuing for a long time; ongoing

“This project has been a durative process, taking months to complete.”

2. noun

a tense or aspect of verbs in languages, expressing an action that is in progress or ongoing

“The linguist studied the durative forms in the ancient language.”

3. adverb

for a long time or during a long period

“She worked duratively on the project, spending many hours each day.”