Main entry: diligent
Definition: characterized by care and perseverance in carrying out tasks
Usage: a diligent detective investigates all clues; a diligent search of the files
Antonyms: negligent
Definition: characterized by neglect and undue lack of concern
Main entry: persevering, diligent
Definition: quietly and steadily persevering especially in detail or exactness
Usage: a diligent (or patient) worker; with persevering (or patient) industry she revived the failing business
Antonyms: impatient
Definition: restless or short-tempered under delay or opposition