default (n.)
- absence
- absenteeism
- arrears
- culpa
- cut
- dearth
- decline
- defalcation
- defect
- defection
- defectiveness
- deficiency
- deficit
- delinquency
- departure
- dereliction
- disappearance
- dishonor
- disregard
- drop
- escape
- failure
- fault
- forfeit
- furlough
- holiday
- hooky
- ignore
- imperfection
- inaction
- inadequacy
- inadvertence
- inadvertency
- inattention
- inferiority
- insufficiency
- lack
- lapse
- laxity
- laxness
- leave
- leaving
- levant
- looseness
- lose
- miss
- neglect
- neglectfulness
- negligence
- nod
- nonappearance
- nonattendance
- noncompliance
- nonconformance
- nonconformity
- nonfeasance
- noninterference
- nonobservance
- nonpayment
- nonperformance
- nonremittal
- omission
- overdraft
- overlook
- oversight
- permissiveness
- privation
- procrastination
- protest
- remissness
- repudiation
- sacrifice
- shortage
- shortcoming
- shortfall
- slackness
- sleep
- slight
- slump
- truancy
- underage
- vacation
- want
- weakness
- welsh
