overpay

As a verb overpay

is to pay too much.

As a preposition under is

under.

As verbs the difference between overpay and overply

is that overpay is to pay too much while overply is to ply to excess; to exert with too much vigour; to overwork.

As verbs the difference between overpay and oversay

is that overpay is to pay too much while oversay is to say over again; to repeat.

As verbs the difference between overpay and overplay

is that overpay is to pay too much while overplay is and to overdo or overact one's effect or role.

As verbs the difference between overlay and overpay

is that overlay is to lay, or spread, something over or across; to cover while overpay is to pay too much.

As a noun overlay

is (printing) a piece of paper pasted upon the tympan sheet to improve the impression by making it stronger at a particular place.

As a noun taxonomy

is the science or the technique used to make a classification.

As a verb overpay is

to pay too much.

Overpayment is a related term of overpay.

As a verb overpay

is to pay too much.

As a noun overpayment is

payment exceeding the amount actually due.