profitably

from WordNet (r) 3.0 (2006)

profitably
    adv 1: in a productive way; "they worked together productively
           for two years" [syn: {productively}, {fruitfully},
           {profitably}] [ant: {fruitlessly}, {unproductively},
           {unprofitably}]

from The Collaborative International Dictionary of English v.0.48

Profitable \Prof"it*a*ble\, a. [F. profitable.]
   Yielding or bringing profit or gain; gainful; lucrative;
   useful; helpful; advantageous; beneficial; as, a profitable
   trade; profitable business; a profitable study or profession.
   [1913 Webster]

         What was so profitable to the empire became fatal to
         the
         emperor.                                 --Arbuthnot.
   [1913 Webster] -- {Prof"it*a*ble*ness}, n. --
   {Prof"it*a*bly}, adv.
   [1913 Webster]