unpaid
adjective uk/ʌnˈpeɪd/ us/ʌnˈpeɪd/
C1 （债务、税等）未支付的，未偿付的
An unpaid debt, tax, etc. has not been paid.
$50,000 in unpaid taxes 5万美元的未付税款
C1 无偿的，免费的，没有报酬的
Unpaid work is work that you do without getting any money for it.
unpaid work/employment 没有报酬的工作／职业