When to use to worry in Korean
Korean: 걱정하다[ geok-jeong-ha-da ]

When to use it
걱정하다 means to worry or feel concerned about something. You use it when you think something bad might happen or when you care about a problem. In Korean, people often use it for family, school, health, money, or travel.
Example sentences
엄마는 내 건강을 걱정해요.
My mom worries about my health.
시험이 있어서 걱정해요.
I am worried because I have a test.
비가 많이 와서 길을 걱정했어요.
I worried about the road because it rained a lot.
친구가 늦어서 걱정했어요.
I was worried because my friend was late.
이 셔츠는 너무 비싸서 돈을 걱정해요.
This shirt is too expensive, so I worry about money.
내일 비행기 시간이 늦을까 봐 걱정해요.
I worry that tomorrow's flight might be late.