In a way that produces good or beneficial results; productively or successfully.
From 'fruitful' (fruit + -ful) plus '-ly' (forming adverbs from adjectives). The '-ly' suffix comes from Old English '-lice,' originally meaning 'in the manner of.'
Scientists noticed that 'fruitfully' appears in academic writing far more often than in everyday speech—it's a word that signals formal, intellectual communication. Your choice to use 'fruitfully' versus 'productively' instantly marks your register and education level.
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