The phrase "more nested" refers to something that is further encapsulated within a larger structure or hierarchy. Some synonymous phrases include "more deeply embedded," "increasingly nested," "further enmeshed," "more intricately layered," and "greater degrees of complexity." These phrases all convey a sense of something being tightly woven or closely bound within a larger construct, whether that be a dataset, a programming language, or a system of beliefs. When describing something as more nested, it implies that it is more difficult to access or manipulate, requiring more thorough understanding and careful consideration.