The phrase "be ensconced in" refers to being firmly established or settled in a particular place or situation. There are several synonyms for this phrase, including "be nestled in," "be snug in," "be comfortably situated in," "be firmly entrenched in," and "be deeply rooted in." These phrases all convey a sense of security and stability, suggesting that the subject is firmly entrenched in their current position or state. Whether it's a physical location or a mental state of being, being ensconced conveys a sense of comfort and contentment that can be difficult to achieve when feeling uncertain or unstable.