This is the 527th most frequent Korean word.
결코
"Never" or "by no means."
Here, '결코' emphasizes a strong negative intention, showing determination in not giving up.
나는 결코 포기하지 않을 것이다.
I will never give up.
In this sentence, '결코' stresses the difficulty of the problem, rejecting any notion that it might be easy.
이 문제는 결코 쉽지 않다.
This problem is by no means easy.
In this context, '결코' illustrates a definitive negative statement regarding the person's honesty.