broad

Explanation

1. broad
In a state in which one's chest and shoulders are wide, or one's eyes and mouth are open wide.

2. all of a sudden
In the manner of meeting suddenly.

3. strongly
In the state of standing firmly.

4. strongly
In the state of adhering tightly to something.

Examples
떡 벌어진 어깨
밤송이가 떡 벌어지다
입을 떡 벌리다

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