欠费用英语说作 "arrears".

"Arrears" 来源于拉丁语 "arrera"，意思是 "a thing that remains behind or is overdue"，后来被用来表示 "an unpaid debt or amount overdue for payment".

例句：

I need to catch up on my rent arrears. (我需要把我的房租欠费补上。)

The company is in arrears on its taxes. (公司税款欠费。)

She has been making regular payments to reduce her arrears. (她一直在定期付款，以减少欠款。)