Aware (adjective)

1. Having knowledge or perception of a particular fact or situation.
2. Conscious of something.

Origin:

Late middle english: from old french aveir, from a- (from latin ad "to") + veir "see".

Examples:

1. I am aware of the risks involved.
2. He was not aware of the danger.
3. I am aware of the facts.
4. She was aware of his presence.
5. We are aware of the problem.