Read the dictionary definition of diligent. All definitions for this word.
1. characterized by care and perseverance in carrying out tasks
1. a diligent detective investigates all clues
2. a diligent search of the files
2. quietly and steadily persevering especially in detail or exactness
1. a diligent (or patient) worker
2. with persevering (or patient) industry she revived the failing business