What this suffix does
-dressed forms compound adjectives that describe how a person is clothed and what that clothing signals. Well-dressed, poorly-dressed, overdressed, underdressed, sharply-dressed, simply-dressed — each compound uses clothing as a social and psychological signal. In literary writing, how a character is dressed is never merely descriptive: it signals class, self-awareness, effort, occasion-reading, and the relationship between how one presents oneself and how one is received. "Well-dressed" and its contraries are among the most efficient tools for social characterisation available to a writer.