꼬박

with a nod

Explanation

1. with a nod
In the manner of slightly bending one's head or body when bowing.

2. drowsily
In the manner of almost falling asleep or almost dozing off and not being aware of it.

Examples
꼬박 고개를 숙이다
꼬박 머리를 숙이다
꼬박 인사하다

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