[1] : The Collaborative International Dictionary of English v.0.48

gainful \gain"ful\, a.
   profitable; advantageous; lucrative. "a gainful speculation."
   --macaulay. -- gain"fully, adv. -- gain"fulness, n.
   1913 webster
see also:
gain"fully gain"fulness 

[2] : WordNet (r) 2.0

gainful
     adj : yielding a fair profit syn: paid, paying
see also:
paid paying 

[3] : Moby Thesaurus II by Grady Ward, 1.0

27 moby thesaurus words for "gainful":
   advantageous, banausic, beneficial, breadwinning, fat, fruitful,
   generous, good, lucrative, lush, moneymaking, of value, paying,
   productive, profitable, remunerative, rewarding, rich, satisfying,
   substantial, useful, valuable, well, well-paying, well-spent,
   worthwhile, yielding a return

Gainful >> G Words
Gainful, definition of term: Gainful
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