불만으로

In a sentence

• 그는 회사의 결정에 불만으로 사직서를 제출했다.

  He submitted his resignation due to dissatisfaction with the company's decision.

  In this sentence, '불만으로' indicates the reason for his action, showing discontent as a cause for resignation.

• 그녀는 친구의 불성실한 태도에 대해 불만으로 가득 찬 편지를 썼다.

  She wrote a letter full of complaints about her friend's insincere attitude.

  Here, '불만으로' is used to attribute the dissatisfaction that inspired her writing the complaint-filled letter.

• 나는 마라톤 대회가 갑자기 취소된 것에 불만으로 많은 참가자들이 항의했다고 들었다.

  I heard that many participants protested due to the dissatisfaction of the sudden marathon cancellation.

  In this case, '불만으로' explains the dissatisfaction as the driving force behind the protests.