The term "most well versed" refers to someone who is highly knowledgeable or skilled in a particular field or subject. Its antonyms, on the other hand, would refer to individuals who lack expertise or proficiency in the same area. These antonyms might include descriptors such as "inexperienced," "unskilled," "ignorant," or "novice." Other antonyms could include words such as "amateurish," "unsophisticated," "inept," or "naive." It is important to note that these are all subjective terms and vary depending on the specific field or subject being discussed. However, they all share the common characteristic of indicating a lack of knowledge or skill in comparison to someone who is "most well versed.