나쁜

In a sentence

• 그 사람은 나쁜 습관이 있어요.

  That person has bad habits.

  Here, '나쁜' is used to describe '습관' (habits), denoting a negative quality of the habits.

• 날씨가 오늘 정말 나쁜 것 같아요.

  The weather seems really bad today.

  In this sentence, '나쁜' is modifying '것' (thing), referring to unfavorable weather conditions.

• 저는 나쁜 행동을 하지 않으려고 노력합니다.

  I try not to do bad behaviors.

  Here, '나쁜' describes '행동' (behaviors), implying actions with negative moral or social implications.