The phrase "more caveman" implies a lack of sophistication or refinement. Antonyms for this phrase could include more refined, cultured, polished, sophisticated, civilized, or elegant. Using these words to describe someone or something suggests a level of education, manners, or taste that is the opposite of the rudimentary nature associated with cavemen. For example, a person who is cultured might appreciate art, music, or literature, whereas a caveman might focus simply on survival. The use of antonyms can help elevate the tone and impression of your writing, imparting a sense of sophistication, thoughtfulness, and intelligence.