There are several synonyms for the term "wealthy girl." Some common alternatives include "heiress," "privileged young woman," "affluent lady," "well-to-do female," and "rich girl." The term "heiress" specifically refers to a young woman who is set to inherit significant wealth from her family, while "privileged young woman" connotes a societal elite with access to exclusive opportunities. "Affluent lady" and "well-to-do female" both suggest financial stability and comfort, while "rich girl" is a more casual and colloquial term. Regardless of the specific synonym used, each one communicates the idea of a young woman who has access to significant financial resources and enjoys a certain degree of privilege as a result.