Main entry: cognisant, cognizant, aware
Definition: (sometimes followed by `of') having or showing knowledge or understanding or realization or perception
Usage: was aware of his opponent's hostility; became aware of her surroundings; aware that he had exceeded the speed limit
Antonyms: incognizant, unaware
Definition: (often followed by `of') not aware
Antonyms: unvigilant, unwatchful, unalert
Definition: not alert to what is potentially dangerous
Antonyms: asleep
Definition: in a state of sleep
Antonyms: dead
Definition: no longer having or seeming to have or expecting to have life
Antonyms: unconscious
Definition: not conscious; lacking awareness and the capacity for sensory perception as if asleep or dead
Antonyms: insensible
Definition: incapable of physical sensation
Main entry: mindful, aware
Definition: bearing in mind; attentive to
Usage: ever mindful of her health; mindful of his responsibilities; mindful of these criticisms, I shall attempt to justify my action
Antonyms: mindless, unmindful, forgetful
Definition: not mindful or attentive
Definition: marked by or paying little heed or attention
Antonyms: careless
Definition: marked by lack of attention or consideration or forethought or thoroughness; not careful