neglectful

Adjective

• failing in what duty requires
  • derelict (or delinquent) in his duty
    
  • neglectful of his duties
    
  • remiss of you not to pay your bills
    

• not showing due care or attention
  • inattentive students
    
  • an inattentive babysitter
    
  • neglectful parents
    

Related words

• Synonyms: 
  derelict , delinquent , remiss , inattentive