1) Asleep 2) Badly informed 3) Ignorant 4) In la-la land 5) In the dark 6) Insensible 7) Left in the dark 8) Like a sleeping guard 9) Napping, so to speak 10) Not apprised 11) Not aware 12) Not aware or conscious 13) Not clued in 14) Not cognizant 15) Not informed 16) Not knowing 17) Not on the ball 1) Asleep 2) Ignorant 3) Incognizant 4) Insensible 5) In the dark 6) Oblivious 7) Unconscious 8) Unmindful 9) Unsuspecting 10) Unwitting 
• (a.) Not aware; not noticing; giving no heed; thoughtless; inattentive. • (adv.) Unawares.
[adj] - (often followed by `of`) not aware
incognizant adjective (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`
not aware or conscious; unconscious: to be unaware of any change.