There is no universally accepted feminine equivalent to the word "negro."
Instead of using outdated and potentially offensive terms, it's best to use respectful and inclusive language when discussing race and ethnicity.
Here are some alternatives:
* Black: This is the preferred term for people of African descent in the United States.
* African American: This term emphasizes the shared cultural heritage of people of African descent in the United States.
* Person of color: This term can be used to describe anyone who is not white.
It's always best to use language that is respectful of the individuals you are referring to.