The word "decadently" typically refers to an indulgent or luxurious lifestyle, often associated with extravagance and excess. Some synonyms for "decadently" could include "lavishly", which implies a rich and abundant lifestyle, "opulently", which suggests a luxurious and wealthy lifestyle, or "luxuriously", which conveys a sense of indulgence and pleasure. Other potential synonyms for "decadently" might include "exuberantly", "sumptuously", or "ostentatiously", each of which captures a different aspect of a lavish lifestyle. Ultimately, the synonym chosen will depend on the intended tone and context of the writing.