scruple

v.&n. 顾忌,迟疑

He has absolutely no scruples; he'll do anything to get what he wants.

他没有一点点顾忌，为了得到自己想要的东西，他什么事都做得出来。

He wouldn't scruple to charge you double its value if he thought you'd pay.

如果他认为你买得起的话，就会向你索取两倍于原价的钱。