scurvy

用如此卑鄙的手段欺骗老人真是下作。

It was a ___scurvy act to deceive the elderly like that.

他对室友耍了一个卑劣的恶作剧，把研究生项目的录取通知藏起来直到过了截止日期。

He played a ___scurvy trick on his roommate by hiding the acceptance to the graduate program until after the deadline.

那个卑鄙的推销员向三个街区的几十对退休夫妇出售了毫无价值的保险单。

The ___scurvy salesman sold worthless insurance policies to dozens of retired couples across three neighborhoods.