unexpended

The project finished under budget, so we returned the unexpended money to the fund.

用法提示：unexpended 作形容词，修饰 money，表示“尚未用完的”。

Any unexpended balance in the account must be spent before the end of the year.

用法提示：unexpended 作形容词，修饰 balance，表示“未动用的”。

The school used the unexpended portion of its grant to buy new books.

用法提示：unexpended 作形容词，修饰 portion，表示“未花费的”。