This is the 767th most frequent Korean word.
과도한
Excessive.
Here, 과도한 means 'excessive,' describing the expenses that are over a reasonable or normal amount.
그 회사는 과도한 비용을 지출하고 있다.
The company is incurring excessive expenses.
In this sentence, 과도한 describes the level of exercise being done more than is beneficial or safe.
과도한 운동은 몸에 해로울 수 있으니 주의하세요.
Excessive exercise can be harmful to your body, so be cautious.
Here, 과도한 addresses the confidence being more than appropriately or effectively needed.