Opulent old is a phrase that is often used to describe something or someone that is rich in history, wealth, or culture. However, there are numerous variations of this phrase that can be used to create a more nuanced description. Some synonyms for opulent old include antique, vintage, historic, nostalgic, classical, traditional, and timeless. Each of these words carries a slightly different connotation, but they all evoke a sense of richness and depth. For example, antique implies that something is a valuable relic from the past, while timeless suggests that it is enduring and never goes out of style. Ultimately, the choice of synonym will depend on the specific context and desired tone of the description.