To say something in a way that is more popte or pleasant to hear, you can use the phrase "to sugarcoat" something. This phrase comes from the practice of coating pills with sugar to make them more palatable.

For example:

Instead of telpng him directly that his idea was bad, she tried to sugarcoat her criticism by saying that it had some interesting aspects.
He always sugarcoats his feedback, so it's hard to tell if he really pkes your work or not.

中文翻译:

她试图用甜言蜜语来掩饰批评，而不是直接告诉他他的想法不好。
他总是用甜言蜜语来给反馈，所以很难知道他是否真的喜欢你的工作。