到期不还贷的英文：
default on a loan

参考例句：

Default on a loan
到期不还贷

default是什么意思：
n. 未履行，违约；拖欠；默认值；未到庭；缺席；弃权
v. 未出庭；不到场；弃权；不履行；未支付
adj. 默认的

The factory defaulted on the payment for the materials.
工厂买原料的钱迟迟不还。

The judge defaulted the defendant.
法官宣布被告未到庭。

The factory has defaulted on its payments for the goods.
该厂拖欠货款。

He was silent in default of any excuse.
他无可推诿，哑口无言。

The default value if this parameter is not specified is zero.
如果没有指定此参数则默认的值是0。

loan是什么意思：
n. 贷款；借出
v. 借出；贷款给

Accrued loan commissions: Loan commissions earned but not paid.
应计贷款佣金:已获但尚未支付的贷款佣金。

It galled him to have to ask for a loan.
必须向人借钱使他感到羞辱。

The property was pledged as security for loans.
这地产被当作贷款的抵押。

accommodate sb. with a loan
（银行）向某人提供贷款

outstanding loan portfolio
未偿贷款总额