The antonyms for the word "un-knowledgeable" are knowledgeable, sophisticated, experienced, informed, educated, and skilled. Someone who is knowledgeable has extensive information and understanding about various subjects, while a sophisticated person is cultured and worldly-wise. An experienced individual has gone through different situations, making them more knowledgeable and skilled in their field of expertise. An informed person is always up-to-date on the latest news, trends, and developments. An educated individual has gained knowledge through formal education, while a skilled person has expertise in a particular activity or job. In contrast, un-knowledgeable refers to someone who lacks knowledge, experience, or understanding about a particular subject or issue.