Well-dressed means wearing smart and well-chosen clothes. A well-dressed crowd.
It is about fit and suitability more than about cost, which people forget. A well-dressed person is one you do not notice the clothes on.
1adjectivewell-dressedWearing smart and well-chosen clothes.
“He was the most well-dressed man in the room in a fifteen-year-old suit.”
well-dressed is a quality.