profitably

Gilbert had ambitions, she knew, and Ruby Gillis did not seem the sort of person with whom such could be profitably discussed.

“Let me assure you, madame,” said Lucien, “that had I really the sum you mention at my disposal, I would employ it more profitably than in troubling myself to obtain particulars respecting the Count of Monte Cristo, whose only merit in my eyes consists in his being twice as rich as a nabob.