毫无顾忌地做…
to not care that something you do is morally wrong or likely to have bad results
He wouldn't scruple to cheat his own mother if there was money in it for him. 只要有利可图，他会毫无顾忌地欺骗自己的母亲。
She did not scruple to bend the truth if it suited her.
Notoriously mean with his own money, he didn't scruple to take it from others.
She did not scruple to use questionable means to defend her reputation.
He certainly didn't scruple to betray his friends when push came to shove.
See also: scruple verb