productive
adjective
producing or capable of producing (especially abundantly)
“productive farmland”
“his productive years”
Oppositesunproductivehaving the ability to produce or originate
“generative power”
“generative forces”
Synonymsgenerativeyielding positive results
marked by great fruitfulness
“fertile farmland”
“a fat land”
Source: WordNet 3.1, Princeton University
