"dereliction" in the noun sense
1. delinquency, dereliction, willful neglect
a tendency to be negligent and uncaring
"he inherited his delinquency from his father"
"his derelictions were not really intended as crimes"
"his adolescent protest consisted of willful neglect of all his responsibilities"
2. dereliction
willful negligence
Source: WordNet® (An amazing lexical database of English)
Princeton University "About WordNet®."
WordNet®. Princeton University. 2010.
View WordNet® License