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.
Compound of 大勢 (たいせい, 'general trend' or 'majority') and 順応 (じゅんのう, 'adaptation' or 'conformity').