Formal wear is a common term used for clothing that is typically worn for formal events or occasions such as weddings, cocktail parties, and business meetings. However, there are many other synonyms that can be used to describe formal wear. These include formal attire, black-tie attire, evening wear, dressy clothes, evening dress, formal dress, tuxedo, ball gown, and gala attire. Each of these synonyms is specific to a particular type of formal wear and can be used accordingly. It is always essential to choose the right formal wear for the occasion, so it's important to know the different synonyms and their appropriate situations.