adj.
VERBS
▪ be
▪ remain
▪ leave sth
▪
customers who leave their bills ~ till the last minute
Unpaid is used with these nouns: ↑ bill , ↑ debt , ↑ fee , ↑ intern , ↑ invoice , ↑ job , ↑ labour , ↑ leave , ↑ overtime , ↑ rent , ↑ royalty , ↑ volunteer , ↑ wage , ↑ work