expression, ichidan verb
raise an objection; voice a differing opinion
Used when someone formally or explicitly states a view that contradicts the prevailing opinion or proposal. Often appears in meetings, discussions, or formal settings.
会議で彼はその計画に異を唱えた。
At the meeting, he raised an objection to the plan.
誰も異を唱えなかったので、
Since no one voiced a differing opinion, the proposal was approved.