Knowing the score is a phrase that means to be aware of the situation or the facts of a matter. However, there are several antonyms that convey the opposite meaning. Ignorance is the lack of knowledge, understanding, or awareness of something, while naivety refers to a lack of experience, judgment, or sophistication. Inattentiveness implies a failure to pay attention or take notice of significant details, whereas unenlightened describes a person who is uninformed, uneducated, or narrow-minded. Uninformed or clueless can also be used as antonyms for knowing the score, indicating a lack of factual knowledge or information.