The masculine gender of czarina is czar.
peasant
Doctor is a neuter gender
Opposite gender of Filipino: Filipina
A czarina is the wife of a czar.A czarina is not necessarily married. A czarina could rule in her own right.
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.
The opposite gender to "negro" is "negra" in Spanish, which translates to "black" and "black woman" respectively.
The opposite gender of boy is girl. Boys are male, while girls are female.
The opposite gender of giantess is giant.