This is the 11237th most frequent Korean word.
기해야
"기해야" means "must ensure" or "should make sure."
In this sentence, "기해야" implies the necessity or emphasis on effort for success.
성공을 위해 노력에 기해야 합니다.
To succeed, one should rely on their efforts.
Here, "기해야" denotes that paying attention to advice is crucial for making a correct decision.
그의 충고에 기해야 올바른 결정을 내릴 수 있어요.
By heeding his advice, the correct decision can be made.
In this context, "기해야" suggests relying on or being attentive to one's own actions to maintain health.