ar·rear /əˈrɪr/
 到期未付款,欠帳,未做之事,落後


 Ar·rear adv.  To or in the rear; behind; backwards. [Obs.]


 Ar·rear, n. That which is behind in payment, or which remains unpaid, though due; esp. a remainder, or balance which remains due when some part has been paid; arrearage; -- commonly used in the plural, as, arrears of rent, wages, or taxes.
 For much I dread due payment by the Greeks
 Of yesterday's arrear.   --Cowper.
    I have a large arrear of letters to write.   --J. D. Forbes.
 In arrear or  In arrears, behind; backward; behindhand; in debt.

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