“未付的”的英语可以翻译为：[经] owing，unliquidated，unpaid，outstanding ...

未付的余额留到比较暖和的月份再付.The balance is held until the warmer months.我桌上有张未付的帐单.There is an unpaid bill on my table.敬请注意未付的钱 ( 帐款 ).We must draw your attention to your outstanding money ( account )....