- 1producing many useful results synonym productive a fruitful collaboration/discussion a fruitful source of information The research has proved extremely fruitful. opposite fruitless
- 2(literary) (of land or trees) producing a lot of crops
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NAmE//ˈfrutfəli//adverb Computers are now widely and fruitfully used in classrooms throughout the United States.
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noun [uncountable] It takes time for the validity or fruitfulness of any academic development to become clear.