not scruple to do sth
collocation毫无顾忌地做（多指不道德的事）
He did not scruple to use his power for personal benefit.
他毫无顾忌地利用职权谋取私利。
起疑；质疑；使产生顾虑；使犹豫；因良心或利害考虑而犹豫或不愿行事。；使产生顾虑；使犹豫。；对...起疑；质疑。
to hesitate or feel reluctant to do something because of moral or practical doubts
因良心或利害考虑而犹豫或不愿行事。
To hesitate or be reluctant to act due to considerations of conscience or expedience.
使产生顾虑；使犹豫。
To excite scruples in; to cause to scruple.
对...起疑；质疑。
To regard with suspicion; to question.
一般现在时
He never scruples about telling a lie.
他对说谎从不犹豫。
一般过去时
She scrupled to accept the offer.
她对接受这个提议有所顾忌。
现在完成时
They have scrupled to intervene.
他们一直对干预有所顾虑。
正则动词，表示犹豫或顾忌
He didn't scruple to lie to his parents about his grades.
他在成绩上对父母撒谎，毫无顾忌。
用法提示：动词，表示因道德原因而犹豫，常用于否定结构。
She scrupled to accept the gift, fearing it might be seen as a bribe.
她犹豫是否接受这份礼物，担心会被视为贿赂。
用法提示：动词，表示因道德顾虑而踌躇。
They never scruple at using any means to achieve their goals.
他们为达目的不择手段，毫无顾忌。
用法提示：动词，常用于否定形式，表示没有道德上的犹豫。
最通用，可泛指任何原因；scruple 多特指道德或良心层面的顾虑。
强调在决定或意见间摇摆，不一定涉及道德动机。
较正式，常针对提议礼貌地表示反对或推辞，语气不像 scruple 那样偏重内心道德冲突。
语气更强，强调因困难、厌恶或畏惧而突然停下或拒绝。
强调在选项间反复犹豫，通常不限于道德原因，且用法不如 scruple 正式。
毫无顾忌地做（多指不道德的事）
He did not scruple to use his power for personal benefit.
他毫无顾忌地利用职权谋取私利。
对某事有所顾虑
He scrupled at the thought of lying to his parents.
他对向父母撒谎这个念头有所顾虑。
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指人判断对错的内心准则，常使人因道德顾虑而犹豫。
指规范行为的道德原则体系，与行动前的顾虑相关。
违背道德后的自我责备感，可能阻止人继续某个行为。
关于善恶对错的观念，影响人是否愿意做某事。
个人坚守的行为准则，会让人在违背时产生犹豫。
毫无顾忌地做（坏事）；忍心做
The manager did not scruple to blame others for his own mistakes.
那位经理毫无顾忌地把自己的错误归咎于他人。
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Dictionary facts from ECDICT, WIKTIONARY, WORDNET.