In arrear

In arrear
Arrear 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. --Locke. [1913 Webster]

For much I dread due payment by the Greeks Of yesterday's arrear. --Cowper. [1913 Webster]

I have a large arrear of letters to write. --J. D. Forbes. [1913 Webster]

{In arrear} or {In arrears}, behind; backward; behindhand; in debt. [1913 Webster]

The Collaborative International Dictionary of English. 2000.