1 : not paid at an expected or required time

• She reminded him that the rent was overdue.
• He has many overdue

2 : not appearing or presented by a stated, expected, or required time

• The train is 10 minutes overdue.
• Her baby is overdue by one week.
• an overdue library book

3 — used to say that something should have happened or been done before now

• His promotion is long overdue. = He is long overdue for a promotion.
• Repairs on that building are long overdue.