Dinner clothes are an essential part of every wardrobe, but sometimes it can be challenging to find just the right word to describe them. Fortunately, there are many synonyms for this term. For a formal occasion, you might want to use a more elegant term like evening wear or formal attire. If the event is less formal, you could use terms like dressy casual or smart casual. Other synonyms for dinner clothes include dress-up clothing, party clothes, and occasion wear. Whatever word you choose, the important thing is to feel comfortable and confident in what you're wearing.