The term "most unweaned" implies a level of immaturity or inexperience. The antonyms for this phrase could include "fully matured," "highly experienced," "seasoned," "qualified," "adept," or "skillful." These words indicate a level of knowledge or proficiency that is developed over time through practice and experience. Additionally, antonyms such as "grown," "independent," "self-sufficient," and "autonomous" suggest a level of self-reliance and independence that comes with maturity. When looking for antonyms for "most unweaned," it is important to consider words that indicate growth, expertise, and independence.