There are several synonyms for the word "shameless girl" that can be used depending on the context of the situation. Some of these synonyms include brazen girl, audacious girl, impudent girl, insolent girl, and forward girl. These words imply that the girl in question has a lack of shame or guilt, and is unapologetic for her actions. However, it's important to note that applying such labels to others can be harmful and perpetuate gender stereotypes. It's essential to express oneself without using derogatory words that disempower individuals and undermine their integrity. In short, we should strive to treat everyone with respect and avoid using degrading language.