scruple

顾忌、良心不安常用复数

He has no scruples about lying to get what he wants.

他为了达到目的而说谎，完全不会有任何顾忌。

道德原则、良心

Her scruples kept her from accepting the questionable offer.

她的道德原则使她无法接受那个可疑的提议。

顾忌、迟疑正式；多用于否定句

They did not scruple to use threats against their competitors.

他们毫不顾忌地对竞争对手使用威胁手段。