negligence (n.)
- absentmindedness
- acedia
- allowance
- apathy
- approximation
- ataraxia
- carelessness
- casualness
- culpa
- default
- delinquency
- dereliction
- detachment
- deviation
- disinterest
- dispassion
- disregard
- distraction
- dowdiness
- easiness
- easygoingness
- failing
- failure
- fecklessness
- flightiness
- flippancy
- forgetfulness
- frivolousness
- giddiness
- grubbiness
- hastiness
- heedlessness
- impotence
- imprecision
- improvidence
- inaccuracy
- inadvertence
- inadvertency
- inattention
- inattentiveness
- inconsideration
- incorrectness
- indifference
- inexactitude
- inexactness
- inexpedience
- inexpediency
- insouciance
- lapse
- laxity
- laxness
- leniency
- levity
- listlessness
- looseness
- loosening
- malfeasance
- malpractice
- messiness
- mindlessness
- misconduct
- misdirection
- misfeasance
- misgovernment
- mismanagement
- misrule
- neglect
- neglectfulness
- nonchalance
- noncompliance
- nonconformance
- nonconformity
- nonfeasance
- noninterference
- nonobservance
- nonperformance
- obliviousness
- omission
- oscitancy
- overindulgence
- oversight
- permissiveness
- procrastination
- recklessness
- relaxation
- remissness
- seediness
- shabbiness
- shallowness
- shiftlessness
- shoddiness
- slackness
- slatternliness
- slight
- sloppiness
- sloth
- slovenliness
- sluttishness
- softness
- sordidness
- squalidness
- squalor
- superficiality
- tackiness
- tawdriness
- thoughtlessness
- thriftlessness
- tolerance
- unawareness
- unconcern
- unconsciousness
- unmindfulness
- unrestraint
- untidiness
- unwariness
- weakness
- wrongdoing