The term "subdeb" is an outdated slang word that was used to describe a young woman who was not yet a debutante. Today, the word is seldom used but there are some good synonyms to describe a young woman who is not yet ready to be presented to society in a formal way. Some of these synonyms include: ingenue, coquette, fledgling, budding, novice, apprentice, neophyte, and rookie. All of these terms convey a sense of youth and inexperience, but also imply potential for growth and development. While "subdeb" may have fallen out of common usage, there are plenty of words to choose from to describe a young woman who is on the cusp of adulthood.