资料来源 : pyDict

过期的,未兑的,迟到的

资料来源 : Webster's Revised Unabridged Dictionary (1913)

Overdue \O"ver*due"\, a.
   Due and more than due; delayed beyond the proper time of
   arrival or payment, etc.; as, an overdue vessel; an overdue
   note.

资料来源 : WordNet®

overdue
     adj : past due; not paid at the scheduled time; "an overdue
           installment"; "a delinquent account" [syn: {delinquent}]