덜컥Top 15000MeaningsAdverb1. suddenly startled or frightened, with one's heart sinking2. suddenly, abruptly, unexpectedlyPronunciationdeolkeokExamples2덜컥 놀라서 뒤로 물러섰다.Suddenly startled, he stepped back.덜컥 문이 열렸다.The door suddenly opened.