D defs.my
Entry 2 senses · 2 variants Webster, 1913

Arrear

· Ar·rear · IPA /əˈɹɪɹ/
01 adv. To or in the rear; behind; backwards.
  1. 1.
    To or in the rear; behind; backwards.[Obs.]
02 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 bee…
  1. 1.
    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.
Phrases & compounds
In arrear — behind; backward; behindhand; in debt.