I think you're asking for the masculine form of that identifier, and it is "negro".
Negro
Opposite gender to negro is-- NEGRESS
It would be "negra."
It is a neutral or male term. Negress is the feminine version.
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.
The French négresse is the feminine.The word for a male is nègre (negro).
The opposite gender of colt is filly. The word Jew does not normally apply to a specific gender, it applies to either gender. Historically, the term Jewess has sometimes been used to refer to a female Jew, much as Negress has been used to refer to a female Negro. However, that usage is no longer considered appropriate. We do not have separate words for male or female Italians, Spaniards, Germans, etc., and there is no reason why these ethnic groups require such terms.
Doctor is a neuter gender
Opposite gender of Filipino: Filipina
Clot is not gender specific.
Opposite gender of a Filipino: FILIPINA
The opposite gender of fraternity is sorority.
An emperor is the opposite in gender to an empress.