modified
uninformed, unknowing, oblivious, ignorant, not cognizant, unmindful, heedless, negligent, careless, insensible, forgetful, unconcerned, blind, deaf, inattentive, without notice, out of it*, square*, unhip*, out to lunch*, deaf to, dead to, caught napping, in a daze, not seeing the forest for the trees*.
Antonyms conscious*, aware, cognizant.