" This attitude irritated her so that she was several times on the verge of discharging him, but how could she turn out so old an employee and one so painstaking in the duties assigned to him?

The preparation for market required the greatest painstaking of all.

" Never did the great scholar who has been called "the painter of nature" relax his zeal for painstaking as a writer.

As a scientist, Professor Snow is an indefatigable worker, conscientious and painstaking to the last degree, never neglecting anything that can be discovered by the microscope, and when he describes and names a new species, he gives the absolute facts, without regard to theories or philosophies.

She was very patient and painstaking with her pupils, and showed herself interested in every one.