productive in WordNet English dictionary

1. marked by great fruitfulness
   "fertile farmland"; "a fat land"; "a productive vineyard"; "rich soil"
   fat  fertile  productive  rich 
   
2. having the ability to produce or originate
   "generative power"; "generative forces"
   generative  productive 
   
3. producing or capable of producing (especially abundantly)
   "productive farmland"; "his productive years"; "a productive collaboration"
   productive 
   
4. yielding positive results
   productive