Like bills in arrears (6)
I believe the answer is:
unpaid
(Other definitions for unpaid that I've seen before include "Of bill, outstanding" , "Not give wages" , "(Of debt) outstanding" , "Overdue" , "Still owing" .)
I believe the answer is:
unpaid
(Other definitions for unpaid that I've seen before include "Of bill, outstanding" , "Not give wages" , "(Of debt) outstanding" , "Overdue" , "Still owing" .)