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Adjective: diligent  di-li-junt
  1. Characterized by care and perseverance in carrying out tasks
    "a diligent detective investigates all clues"; "a diligent search of the files"
  2. Quietly and steadily continuing a task despite any difficulties
    "a diligent worker"; "with diligent industry she revived the failing business";
    - persevering, perseverant

See also: assiduous, busy, careful, hardworking, industrious, patient, sedulous, tireless, untiring

Antonym: negligent

Encyclopedia: Diligent