consistently; throughout; from start to finish
Used to describe an action, attitude, or state that remains unchanged over a period or across situations. Often appears with verbs like 主張する, 反対する, or 続ける.
He consistently opposed the plan.
This company has consistently emphasized quality.
From 一 (one) + 貫 (pierce, go through), literally 'piercing through as one', giving the sense of something carried through consistently from beginning to end.