Outstanding, as a bill (6)
I believe the answer is:
unpaid
(Other definitions for unpaid that I've seen before include "Not yet remunerated" , "Outstanding, owing" , "volunteer" , "(Of debt) outstanding" , "Without reward" .)
I believe the answer is:
unpaid
(Other definitions for unpaid that I've seen before include "Not yet remunerated" , "Outstanding, owing" , "volunteer" , "(Of debt) outstanding" , "Without reward" .)