Un-knowing means not having knowledge of something. Antonyms for the word un-knowing include informed, knowledgeable, aware, cognizant, enlightened, educated, apprehensive, and familiar. Being informed means having knowledge and being able to make informed decisions. Being knowledgeable means having a lot of knowledge about a particular subject. Being aware means being alert and knowing what is happening around you. Cognizant means being aware of something and being able to understand its meaning. Enlightened means having a deep understanding of something. Educated means having a lot of knowledge gained through education. Apprehensive means being cautious and aware of potential danger. Familiar means having a good knowledge of something because of previous experience or study.