The feminine form "Negress" used to be used to denote a female black person. However, the usage is now archaic and likely to be found offensive.
English nouns don't have gender. Therefore, "negro" could be both masculine or feminine depending on the context.
It would be Negress but nobody uses the term any more because it is racially offensive.
The opposite gender to "negro" is "negra" in Spanish, which translates to "black" and "black woman" respectively.
It would be "negra."
The opposite of rubio (blonde) is negro (black)
Doctor is a neuter gender
Clot is not gender specific.
The French négresse is the feminine.The word for a male is nègre (negro).
The opposite gender of fraternity is sorority.
An emperor is the opposite in gender to an empress.
Opposite gender of Filipino: Filipina
The opposite gender of boy is girl. Boys are male, while girls are female.
The opposite gender of giantess is giant.
The opposite of dairymaid is dairyman.