But in his heart he was very sinister and ruthless. He constantly schemed against people he saw as possible rivals.

但是，内心深处却十分阴险毒辣。凡是能力比他强的人，他都要设法加以打击和谋害。

youdao

Monopolies like Standard Oil and DuPont looked bad: they looked greedy and ruthless and, in the case of DuPont, which made munitions, sinister.

NEWYORKER: The Lie Factory