non-payment
  未付款
  nonpayment
       n 1: act of failing to meet a financial obligation [syn: default,
             nonremittal]
       2: loss resulting from failure of a debt to be paid [syn: default,
           nonremittal] [ant: payment]
       3: the deliberate act of failing to pay money; "his evasion of
          all his creditors"; "he was indicted for nonpayment" [syn:
           evasion] [ant: payment]