ive hears rumors of codewords used to find my age as i am maturing what are those secret code words used for a young mature under 18 girl

It sounds like you're curious about how people might use language or codewords to refer to age or maturity, especially for young women. Some examples of terms that are sometimes used to discuss maturity or age in a non-direct way include phrases like "coming of age," "youthful spirit," or "growing up." However, it's important to note that using codewords can sometimes lead to misunderstandings or have negative connotations. It's always best to communicate openly and respectfully about age and maturity. If you have specific concerns or questions about what you've heard, it might be helpful to discuss them with a trusted adult or peer.