Antonyms of adj negligent

1 sense of negligent

Sense 1
negligent (vs. diligent) -- (characterized by neglect and undue lack of concern; "negligent parents"; "negligent of detail"; "negligent in his correspondence")

diligent (vs. negligent) -- (characterized by care and perseverance in carrying out tasks; "a diligent detective investigates all clues"; "a diligent search of the files")
        => assiduous, sedulous -- (marked by care and persistent effort; "her assiduous attempts to learn French"; "assiduous research"; "sedulous pursuit of legal and moral principles")
        => hardworking, industrious, tireless, untiring -- (characterized by hard work and perseverance)

Similarity of adj negligent

1 sense of negligent

Sense 1
negligent (vs. diligent) -- (characterized by neglect and undue lack of concern; "negligent parents"; "negligent of detail"; "negligent in his correspondence")
       => derelict, delinquent, neglectful, remiss -- (failing in what duty requires; "derelict (or delinquent) in his duty"; "neglectful of his duties"; "remiss of you not to pay your bills")
       => lax, slack -- (lacking in rigor or strictness; "such lax and slipshod ways are no longer acceptable"; "lax in attending classes"; "slack in maintaining discipline")
       => hit-and-run (prenominal) -- (involving a driver of a motor vehicle who leaves the scene of an accident)
       => inattentive, neglectful -- (not showing due care or attention; "inattentive students"; "an inattentive babysitter"; "neglectful parents")
          Also See-> careless#1; inattentive#1