IPA: /ˈfruːt.fəl.i/
KK: /ˈfrutəfəli/
In a way that produces good results or benefits; effectively and successfully.
The team worked fruitfully on the project, achieving all their goals ahead of schedule.
Fruitfully → It is formed from "fruit" (from Old French *fruit*, meaning produce or result) and "-fully" (meaning in a manner full of). The word "fruitfully" means in a manner that is full of productive results or benefits.
Think of 'fruit' as the produce or result of something, and '-fully' means in a manner full of that. So, when something is done fruitfully, it means it yields good results.