未花费的，未用光的，未耗尽的；

1. not used up

    e.g. leftover meatloaf
           she had a little money left over so she went to a movie
           some odd dollars left
           saved the remaining sandwiches for supper
           unexpended provisions

    Synonym: leftoverleft over(p)left(p)oddremaining

2. (of financial resources) not spent

    e.g. unexpended funds
           his unspent allowance

    Synonym: unspent