This is the 5415th most frequent Korean word.
뚝
"뚝" means "suddenly," "abruptly," or the sound "plop" (onomatopoeia).
"뚝" used as an adverb to describe the sudden dropping of the water drop.
물방울이 뚝 떨어졌다.
A drop of water fell suddenly.
"뚝" repeated twice to emphasize the sound of continuous dripping.
그는 뚝뚝 떨어지는 물을 바라보았다.
He watched the water dripping continuously.
"뚝" conveys the feeling of something breaking or snapping sharply.