Significados de so profitless en inglés

He could not understand why Dr Porhoët occupied his leisure with studies so profitless.

A man less staunch and loyal might have thrown over so profitless a service.

But tell me what unfortunate may have the masterage of so profitless a servant as yourself?

He had dunned the poor drunkard for the money until he got tired of so profitless a business, and gave up the account for lost.

For a time Jack followed him about, but after a while wearied of so profitless an occupation, and so took to smoking on the window-ledge.