까마득하다

[까마드카다]

1. far; remote
So far away from a place that it is hard to see or hear clearly.

2. distant
Being a very long time ago, so it is hard to bring back one's memory clearly.

3. being at a loss
Being in a very frustrated state of mind because one does not know what to do.

4. completely forgotten; utterly ignorant
Knowing absolutely nothing.

5. distant
Having a very wide generational or age gap.