refund
UK/ˈriːfʌnd/US/ˈriːfʌnd/
n
An amount of money that is given back to you, especially because you are not happy with something you have bought or because you have paid too much.
v
To give someone their money back, especially because they are not happy with something they have bought or because they have paid too much.
Morpheme Breakdown
re
fund
re
again
fund
money
Etymology
The word 'refund' is a clear compound of Latin elements, entering English via Anglo-French. The prefix 're-' carries its core sense of "back," while the root 'fund' derives from the Latin fundus, which originally meant "bottom" or "foundation" and, by metaphorical extension in Medieval Latin, came to signify a stock or supply of money. The literal morphemic logic is thus "to pour or give money back." This meaning evolved from the concrete idea of returning a monetary supply to its source into the modern abstract commercial concept of reimbursing a customer, perfectly encapsulating the transaction's reversal.
Analysis
Structure: re (again) + fund (money)
re: Latin origin, a prefix meaning "again" or "back".
fund: Latin origin (from fundus, meaning "bottom, piece of land, money"), acting as the root meaning "money" or "supply".
Examples
The company offered a full refund to dissatisfied customers.
If the product is faulty, you are entitled to a refund.
They refused to refund my money without the original receipt.