delinquent - definition and synonyms

adjective 

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/dɪˈlɪŋkwənt/
  1. 1
    behaving in a way that is criminal or immoral
  2. 2
    legal American a delinquent account or tax bill has not been paid on time
    1. a.
      someone who is delinquent in paying their taxes or bills fails to pay the money that they owe
       Synonyms and related words