At Does Diligent Mean?

: characterized by steady, earnest, and energetic effort : painstaking a diligent worker.

What is diligent in a sentence?

He was diligent in the matter of temperature control. They were diligent in the performance of their duties. From his youth he was diligent in his studies and a great reader, and during his college life showed a marked talent for extemporaneous speaking.

What is a diligent work?

Doing something diligently means doing it thoroughly and well. It's the opposite of doing it lazily or shoddily. If you are tireless, persevering, and do things with great care, then you do things diligently. This is an adverb that goes with hard and careful work.