Open English Wordnet
Nouns
Adjectives
(s)derelict, delinquent, neglectful, remissfailing in what duty requires“derelict (or delinquent) in his duty”, “neglectful of his duties”, “remiss of you not to pay your bills”
(s)delinquent, overduepast due; not paid at the scheduled time“an overdue installment”, “a delinquent account”