overdue
(not paid, done or arrived at an expected or required time)
- I have to remind you that the rent is overdue.
- Her baby is 15 days overdue.
overdo
(do or use too much of something)
- Work hard but be careful not to overdo it.
- I think you overdid the salt in the food.
(over cook)
- Don’t overdo the cabbage or it’ll turn to mush.