This is the 2995th most frequent Korean word.
터무니없는
Absurd or ridiculous.
터무니없는 describes the ridiculous or baseless quality of someone's words.
그의 말은 정말 터무니없는 소리였다.
His words were truly absurd.
터무니없는 in this context emphasizes the unrealistic or impractical nature of the plan.
이런 터무니없는 계획으로는 성공할 수 없습니다.
You cannot succeed with such an unreasonable plan.
Here, 터무니없는 refers to the baseless or unsubstantiated quality of the rumor.