The antonyms for the word "most babylike" are mature, grown-up, adult-like, experienced, sophisticated, and wise. While being babylike may connote innocence and dependence, possessing mature and adult-like qualities implies independence, responsibility, and self-sufficiency. Being experienced suggests that one has been through life's trials and tribulations and has gained knowledge and expertise in dealing with various situations. Sophisticated individuals have a refined taste or style and are highly cultured, while wise people possess knowledge and good judgement. Thus, depending on the context, the antonyms for "most babylike" could refer to qualities such as independence, responsibility, experience, refinement, or wisdom.