Fruitful

wiktionary

From Middle English fruitefull, equivalent to fruit +‎ -ful. Compare Dutch vruchtvol, German fruchtvoll, Swedish fruktfull.

fruitful (adj.)

c. 1300, of trees, from fruit + -ful. Related: Fruitfully; fruitfulness. Of animals or persons from early 16c.; of immaterial things from 1530s.