Not square, in a way (5)
I believe the answer is:
owing
(Other definitions for owing that I've seen before include "Unpaid" , "Still outstanding" , "Undischarged" , "This debt has yet to be paid" , "(Of money) outstanding" .)
I believe the answer is:
owing
(Other definitions for owing that I've seen before include "Unpaid" , "Still outstanding" , "Undischarged" , "This debt has yet to be paid" , "(Of money) outstanding" .)