When it comes to describing someone or something as "la-de-da," there are a variety of synonyms that can be used to convey the same meaning. For example, someone might be described as "snobbish," "pretentious," or "arrogant" if they are behaving in a way that is overly self-important or showy. Similarly, something might be called "fancy," "ostentatious," or "extravagant" if it is overly flashy or ornate. Ultimately, the term "la-de-da" is often used to criticize or poke fun at people or things that are trying too hard to be impressive, and there are plenty of other words that can be used to convey the same message.