When it comes to luxury items, there are many different synonyms that can be used to describe them. Some examples include extravagance, opulence, lavishness, indulgence, and deluxe. Each of these words connotes a sense of richness and abundance, and they are often used to describe high-end products such as designer clothing, luxury cars, fine wines, and gourmet foods. Other synonyms for the term "article of luxury" might include things like premium, exclusive, high-quality, and sophisticated. Ultimately, the language used to describe luxury goods is intended to convey a sense of elegance and refinement, emphasizing their exclusivity and premium status.