dereliction[noun]Synonyms: failure, default, delinquency, neglect, oversight
Antonyms: faithfulness
Related Words: abuse, 
misuse, 
outrage [TahlilGaran] English Synonym Dictionary ▲
 der‧e‧lic‧tion /ˌderəˈlɪkʃ
ən, ˌderɪˈlɪkʃ
ən/ 
 noun1.  dereliction of duty formal when someone fails to do what they should do as part of their job
2.  [uncountable] the state of being derelict: 
 areas of industrial dereliction
 areas of industrial dereliction  [TahlilGaran] Dictionary of Contemporary English ▲