PRODUCTIVELY
productively, fruitfully, profitably
(adverb) in a productive way; “they worked together productively for two years”
Source: WordNet® 3.1
Etymology
Adverb
productively (comparative more productively, superlative most productively)
In a productive manner.
Source: Wiktionary
PRODUCTIVE
Pro*duc"tive, a. Etym: [F. productif, L. productivus fit for
prolongation.]
1. Having the quality or power of producing; yielding or furnishing
results; as, productive soil; productive enterprises; productive
labor, that which increases the number or amount of products.
2. Bringing into being; causing to exist; producing; originative; as,
an age productive of great men; a spirit productive of heroic
achievements.
And kindle with thy own productive fire. Dryden.
This is turning nobility into a principle of virtue, and making it
productive of merit. Spectator.
3. Producing, or able to produce, in large measure; fertile;
profitable.
– Pro*duc"tive*ly, adv.
– Pro*duc"tive*ness, n.
Source: Webster’s Unabridged Dictionary 1913 Edition