顾忌的英文：
scruple

参考例句：

unprincipled behavior.
没有道德顾忌的举动

They lived in unashamed luxury.
他们毫不顾忌地过着奢华的生活。

Do not be backward about explaining it
务请加以说明，毋须有所顾忌。

lived in unashamed luxury.
毫不顾忌地过着奢华的生活

In statesmanship,get the formality right;never mind about the morality.
作为政治(家的)手腕，应彻底搞清形式上的手续，至于道德则无需顾忌。

scruple是什么意思：
n. 顾虑，顾忌
v. （对…）有顾虑，顾忌

Don't scruple to ask for anything you want.
你要什么请尽量讲。

Now I determined to step in myself and to allay her scruples with a portion of the truth
这时，我决定亲自出马，说出一部分实话，消除她的顾虑。

The townspeople and the garrison soldiers had no scruples about pledging allegiance to the rebel leader
村民和士兵们纷纷向叛乱首领宣誓效忠。

He will not scruple to charge you double its value if he think you'd pay.
如果他认为你肯付的话，他会毫无顾忌地向你索要双倍价钱。

Harriet had no scruples which could stand many minutes against the earnest pressing of both the others
哈里特即使不愿意，也难却两人的盛意。