Sadly, delinquent describes someone who is repeatedly guilty of minor offences or misdeeds such as breaking windows, shop-lifting, or making something even uglier by spray-painting it.
A delinquent is more or less always a youthful person (though there are delinquent shoe-eating dogs and delinquent fence-destroying horses) so any chance of delinquency is long gone for me.
Which really makes me feel quite wistful.
Thing Not To Be Today: delinquent. This word came from the Latin dēlinquēns, which means offending. Linquere means to forsake.