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. precisely
In the state of being correct in number, amount, size, situation, etc.

3. all of a sudden
In the manner of meeting with someone or something suddenly.

4. strongly
In the state of standing firmly without moving.

5. firmly
In the state of adhering tightly to something.

Examples
눈이 딱 떠지다
어깨가 딱 바라지다
입이 딱 벌어지다

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