conformism; following the crowd; going with the flow
Describes the tendency to align one's behavior or opinions with the majority, often used in social or organizational contexts.
With a conformist attitude, innovative ideas are unlikely to emerge.
He dislikes following the crowd and speaks his mind clearly.
同調圧力 refers to the social pressure to conform, while 大勢順応 is the act or tendency of conforming itself.
付和雷同 is a more negative term for blindly following others without one's own opinion, whereas 大勢順応 is a neutral description of conforming behavior.
Compound of 大勢 (たいせい, 'general trend' or 'majority') and 順応 (じゅんのう, 'adaptation' or 'conformity').