This is the 9164th most frequent Korean word.
걱정도
"걱정도" is not a standalone Korean word; it may arise from "걱정" (worry/concern) combined with other context.
In this sentence, 행정도 (걱정도) is used to express that worrying has been done extensively or sufficiently, implying it's enough.
내일 시험에 대한 걱정도 이미 충분히 했으니 오늘은 좀 쉬어야겠어요.
I have already worried enough about tomorrow's exam, so I should rest a bit today.
Here, 걱정도 conveys the act of worrying concerning the lateness of the friend as part of the overall consideration.
친구가 이렇게 늦는 데 대한 걱정도 했는데 결국 별 일이 없었네요.
I worried about my friend being so late, but in the end, nothing serious happened.
걱정도 here signifies concern and is used to balance the negative with a positive outlook in the statement.