unscrupulous

英 [ʌn'skruːpjʊləs] 美[ʌn'skrupjələs]

• adj. 肆无忌惮的；寡廉鲜耻的；不讲道德的

1. without scruples or principles;

"unscrupulous politicos who would be happy to sell...their country in order to gain power"

2. lacking honesty and oblivious to what is honorable