까다로운

In a sentence

• 그는 매우 까다로운 사람이라 어떤 음식을 잘 안 먹어요.

  He is a very picky person, so he doesn't eat a lot of foods.

  Here, '까다로운' describes a person's characteristic of being picky or hard to please.

• 까다로운 문제를 해결하는 데 시간이 걸릴 거예요.

  It will take time to solve the complicated problem.

  In this sentence, '까다로운' is used to describe a problem as complex or difficult.

• 까다로운 고객을 대하는 법을 잘 배워야 합니다.

  You need to learn how to deal with demanding customers.

  '까다로운' here characterizes customers whose needs or attitudes require careful attention.