negligent

adjectives

characterized by neglect and undue lack of concern
"negligent parents"; "negligent of detail"; "negligent in his correspondence"
negligent
is derived from
negligence
is derived from
neglect
is derived from
neglect
antonym
diligent
is similar to
failing in what duty requires
"derelict (or delinquent) in his duty"; "neglectful of his duties"; "remiss of you not to pay your bills"
delinquent, derelict, neglectful, remiss
is similar to
lacking in rigor or strictness
"such lax and slipshod ways are no longer acceptable"; "lax in attending classes"; "slack in maintaining discipline"
lax, slack
is similar to
involving a driver of a motor vehicle who leaves the scene of an accident
hit-and-run
is similar to
not showing due care or attention
"inattentive students"; "an inattentive babysitter"; "neglectful parents"
inattentive, neglectful
see also
showing a lack of attention or care
"inattentive students"; "an inattentive babysitter"
inattentive
see also
marked by lack of attention or consideration or forethought or thoroughness; not careful
"careless about her clothes"; "forgotten by some careless person"; "a careless housekeeper"; "careless proofreading"; "it was a careless mistake"; "hurt by a careless remark"
careless