The word "allknowing" is often used to describe someone who has complete knowledge or understanding of everything. However, there are several antonyms for this word that describe people who lack knowledge or understanding. These include ignorant, naive, unaware, dull, uninformed, and clueless. Ignorant suggests a lack of knowledge or education about a particular subject, while naive implies a lack of experience or sophistication. Unaware describes someone who is not informed or lacks knowledge of a particular situation. Dull suggests a lack of intellectual curiosity or capacity, while uninformed implies a lack of knowledge or information. Finally, clueless suggests a complete lack of understanding or awareness about a particular topic.