"incognizant" in the adjective sense
1. unaware, incognizant
often followed by `of') not aware
"seemed unaware of the scrutiny"
"unaware of the danger they were in"
"unaware of the newborn hope"
"the most unaware person I've known"
Source: WordNet® (An amazing lexical database of English)
Princeton University "About WordNet®."
WordNet®. Princeton University. 2010.
View WordNet® License