Taylor
The male version of a seamstress is a tailor.
Seamster.
It is same barber. Just as opposite gender of soldier is soldier. When a traditionally a male profession would not have a female equivalent similarly seamstress will not have a male equivalent.
Doctor is a neuter gender
There is no gender in the English noun. Perhaps you mean seamstress, a woman who makes dresses.
Clot is not gender specific.
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 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.
The opposite of dairymaid is dairyman.