This is the 7344th most frequent Korean word.
찌푸리게
To frown or scowl.
Here, '찌푸리게' is used to describe the act of facial expression becoming a frown.
그는 갑자기 얼굴을 찌푸리게 되었다.
He suddenly frowned.
'찌푸리게' refers to the gloomy and clouded appearance of the sky.
비가 올 것 같아 하늘이 찌푸리게 보인다.
The sky looks gloomy, as if it's going to rain.
'찌푸리게' conveys the shift in atmosphere to a tense or unpleasant state.