This is the 2977th most frequent Korean word.
충분한
"Enough" or "sufficient."
Here, '충분한' refers to having an adequate amount of time to complete an activity.
나는 충분한 시간이 있을 때만 그 일을 할 수 있어.
I can do that work only when I have enough time.
In this case, '충분한' relates to the amount of necessary preparation before an event.
충분한 준비 없이 시험을 볼 수는 없어.
You can't take an exam without sufficient preparation.
Here, '충분한' is used to specify the necessary extent of resources required for a goal.