productive

1 : having the quality or power of producing especially in abundance <productive fishing waters>
2 : effective in bringing about <investigating committees have been productive of much good — R. K. Carr>
3 a : yielding results, benefits, or profits b : yielding or devoted to the satisfaction of wants or the creation of utilities
4 : continuing to be used in the formation of new words or constructions <un- is a productive prefix>
5 : raising mucus or sputum (as from the bronchi) <a productive cough>

— pro·duc·tive·ly adverb

— pro·duc·tive·ness noun