To go along with others' opinions or behavior without critical thought; to conform or follow someone else's lead (often with a negative connotation).
彼は会議で自分の意見を言わず、いつも付和してしまう。
He never voices his own opinion at meetings and always just goes along with others.
付和するだけでは信頼を得られないこともある。
Just going along with others may not earn you trust.