This is the 1438th most frequent Korean word.
적절한
"Appropriate" or "suitable."
Here, '적절한' modifies '방법' (method) to describe it as suitable or fitting for solving the problem effectively.
그는 적절한 방법을 찾아 문제를 해결했습니다.
He found the appropriate method to solve the problem.
In this sentence, '적절한' is used to describe '시기' (timing) as well-suited or optimal for a desired outcome.
적절한 시기를 선택하는 것이 중요합니다.
Choosing the appropriate timing is important.
The word '적절한' here qualifies '주제' (topic) to indicate that it is pertinent and suitable for the meeting.