Open English Wordnet
Adjectives
(a)productiveproducing or capable of producing (especially abundantly)“productive farmland”, “his productive years”, “a productive collaboration”
(a)generative, productivehaving the ability to produce or originate“generative power”, “generative forces”
(s)fat, fertile, productive, richmarked by great fruitfulness“fertile farmland”, “a fat land”, “a productive vineyard”, “rich soil”