Akademik

negligent
adjective
characterized by neglect and undue lack of concern (Freq. 1)
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negligent parents

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negligent of detail

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negligent in his correspondence

Ant: ↑diligent
Similar to:
derelict, ↑delinquent, ↑neglectful, ↑remiss, ↑lax, ↑slack, ↑hit-and-run, ↑inattentive
See Also: ↑careless, ↑inattentive
Derivationally related forms: ↑negligence, ↑neglect

Useful english dictionary. 2012.