There are several synonyms that can be used to describe someone who is in full dress. These words can be used to give emphasis to how formally dressed a person is. Some examples of synonyms for "in full dress" include "dressed to the nines," "dressed to kill," "dressed to impress," "decked out," and "suited up." These terms can be used to describe someone who is dressed up for a special occasion, such as a wedding, prom, or formal event. They can also be used to describe someone who is dressed in business attire, ready for a meeting or interview. Regardless of the context, each of these synonyms conveys a sense of formality and elegance.