Adjective diligent has 2 senses
- diligent, persevering - quietly and steadily persevering especially in detail or exactness; "a diligent (or patient) worker"; "with persevering (or patient) industry she revived the failing business"
Antonym: impatient (indirect, via patient)
- diligent - characterized by care and perseverence in carrying out tasks; "a diligent detective investigates all clues"; "a diligent search of the files"
Antonyms: negligent, derelict, delinquent, remiss, lax, slack, hit-and-run, inattentive, neglectful
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