This is the 13909th most frequent Korean word.
말뿐이어서
"Just words without action."
In this sentence, '말뿐이어서' indicates that the person's claim of trying is only talk and lacks corresponding actions.
그는 항상 노력한다고 말하지만, 말뿐이어서 실질적인 행동이 없다.
He always says he tries hard, but it's just words without action.
Here, '말뿐이어서' conveys that the promises are empty words without fulfillment.
그녀의 약속은 늘 말뿐이어서 신뢰가 가지 않는다.
Her promises are always mere words, so they don't inspire trust.
In this context, '말뿐이어서' refers to the plan being only talk and not backed by practical steps.