'Gainfully' definitions:

Definition of 'gainfully'

From: WordNet
adverb
In a gainful way; "are you gainfully employed now?"

Definition of 'Gainfully'

From: GCIDE
  • Gainful \Gain"ful\, a. Profitable; advantageous; lucrative. "A gainful speculation." --Macaulay. -- {Gain"ful*ly}, adv. -- {Gain"ful*ness}, n. [1913 Webster]