Conscious

 con·scious 

/ˈkän(t)SHəs/

adjective "the patient was conscious"
 * aware of and responding to one's surroundings; awake.
 * having knowledge of something; aware.

"we are conscious of the extent of the problem"
 * painfully aware of; sensitive to.

"he was very conscious of his appearance"

Antonyms: unconscious, Chnightat user