Wordnet 3.0
ADJECTIVE (1)
1. 
 (sometimes followed by `of') having or showing knowledge or understanding or realization or perception; 
- Example: "was aware of his opponent's hostility"- Example: "became aware of her surroundings"- Example: "aware that he had exceeded the speed limit"[syn: aware(p), cognizant, cognisant]
WordNet (r) 3.0 (2006):
cognisant
    adj 1: (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" [syn: aware(p), cognizant, cognisant] [ant:
           incognizant, unaware]