"Impubic" is a term that refers to something or someone lacking in pubic hair or not yet experiencing puberty. While not a commonly used word, there are several synonyms that can be used depending on the context. Some of the most common synonyms include prepubescent, undeveloped, immature, and juvenile. These words are often used to describe young children or adolescents who have not yet gone through the physical changes associated with puberty. Other synonyms that can be used include immature, inexperienced, innocent, naive, and green. These words are often used to describe someone lacking in knowledge or experience in a certain area.