delinquent (n.)
- aberrant
- criminal
- crook
- culprit
- deceiver
- defaulter
- derelict
- deviant
- evil
- evildoer
- failing
- felon
- gangster
- hooligan
- late
- lawbreaker
- lax
- levanter
- malefactor
- malfeasant
- miscreant
- mobster
- offender
- outlaw
- racketeer
- remiss
- roughneck
- ruffian
- sinful
- sinner
- slack
- terrible
- thief
- transgressor
- villain
- welsher
- wrong
- wrongdoer
delinquent (adj.)
- aberrant
- abnormal
- abominable
- atrocious
- behindhand
- careless
- criminal
- derelict
- deviant
- disgraceful
- evil
- failing
- ignominious
- illegal
- improper
- inappropriate
- incorrect
- indecorous
- infamous
- late
- lax
- malevolent
- neglectful
- negligent
- off-base
- off-color
- outlaw
- overdue
- regardless
- remiss
- sacrilegious
- scandalous
- shameful
- shameless
- sinful
- slack
- terrible
- undue
- unfit
- unfitting
- unlawful
- unpaid
- unrighteous
- unseemly
- unsuitable
- wicked
- wrong
- wrongful
