This is the 9410th most frequent Korean word.
결심했지만
"결심했지만" means "determined but" or "decided but."
Here, 결심했지만 indicates a resolved decision followed by a contrasting statement of faltering commitment.
저는 다이어트를 하기로 결심했지만, 항상 음식 유혹에 굴복합니다.
I decided to go on a diet, but I always succumb to food temptations.
In this case, 결심했지만 shows a firm decision initially taken but accompanied by reconsideration or hesitation later.
그는 새로운 직장을 찾기로 결심했지만, 현재 상황이 만족스러워 마음이 흔들립니다.
He decided to look for a new job, but he's hesitant because he feels content with his current situation.
This usage displays the resolution to an action that is later disrupted or challenged by unexpected events.