If you have no qualms about doing something, you are not worried that it may be wrong in some way.
例句
I have no qualms about recommending this approach...我会毫不犹豫地推荐这一方法。Did she see her husband as capable of murder? She had used the word without a qualm.她觉得自己的丈夫可能杀人吗？在使用这个字眼的时候，她没有丝毫的不安。
英汉词典释义
n.
（对自己行为的）顾虑，不安 (~ about sth)
He had been working very hard so he had no qualms about taking a few days off.他一直辛勤工作，所以休息几天他觉得心安理得。