Blindly following others or uncritically adopting other people's opinions; the act of conforming without independent thought (yojijukugo, negative nuance).
集団での討論で付和雷同しているだけでは、良い結論は出ない。
If you only follow the group unthinkingly in a discussion, you won't reach a good conclusion.
彼の意見はいつも付和雷同で、信頼されていない。
His opinions are always mere echoes of others', so he is not trusted.
リーダーは付和雷同を避け、独自の考えを示すべきだ。
A leader should avoid blind conformity and present original ideas.