The antonyms for the phrase "more fossilized" can be "less rigid," "more dynamic," or "fluid." These antonyms convey the opposite meaning of fossilization, which is the state of being unchanging, rigid, and static. Instead, they suggest a more progressive, malleable, and flexible state of being. To be less fossilized implies the ability to adapt to changing circumstances and emotions. In other words, it denotes an individual who is open-minded, receptive, and willing to evolve. Therefore, while fossilization can be an important aspect of historical preservation, being less fossilized can be a crucial characteristic for personal and social growth.