If you just want an antonym for the word, I would suggest that "ignorance" is the closest equivalent, in nearly all of the senses of the word. If this is about

If you just want an antonym for the word, I would suggest that "ignorance" is the closest equivalent, in nearly all of the senses of the word. If this is about enlightenment, as in the Buddhist concept, then "unawareness" or even "unconsciousness" might be a bit closer. To be enlightened (bodhi) in Sanskrit/Pali is to be awoken ("woke"? heh); it is related to the verb for "to wake up".