The antonyms for the term "most unlettered" can be described as educated, literate, intellectual, knowledgeable, intelligent, erudite, scholarly, and cultivated. These words describe people who possess a great understanding and knowledge of a particular subject or area of study. They are the opposite of uneducated or ignorant individuals who lack the ability to read, write, or comprehend basic information. Most educated individuals tend to have a higher social status, career success, and overall quality of life. It is essential to strive to improve one's education to become a more enlightened, intriguing, and successful individual.