The phrase "not confined" denotes a sense of freedom and boundlessness. Synonyms for this phrase could include words like "unrestricted," "unfettered," or "unrestrained." Another possible synonym might be "spacious," which suggests ample physical room or breathing space. "Open," "expansive," and "unlimited" are all words that convey the same sense of liberation from constraints. Other possible synonyms for "not confined" might include terms like "unbounded," "limitless," or "boundless," which suggest a sense of possibility and endlessness. Ultimately, any synonym for "not confined" should capture the spirit of openness and freedom that this phrase embodies.