cognizant

Adjective

• (sometimes followed by `of') having or showing knowledge or understanding or realization or perception
  • was aware of his opponent's hostility
    
  • became aware of her surroundings
    
  • aware that he had exceeded the speed limit
    

Related words

• Synonyms: 
  aware(p) , cognisant
• Antonyms: 
  unaware , incognizant