Doctor is a neuter gender
Opposite gender of Filipino: Filipina
Clot is not gender specific.
In English there are no masculine or feminine forms. English uses gender specific nouns for a male or a female.The noun bartender is a common gender noun, a word for a male or a female who tends bar.The gender specific noun for a male is barman.The gender specific noun for a female is barmaid.
Opposite gender of a Filipino: FILIPINA
The opposite gender of farmer is farmeress or farmwife.
An emperor is the opposite in gender to an empress.
The opposite gender of fraternity is sorority.
The opposite gender of giantess is giant.
The opposite gender for Joseph is Josephine.
The opposite of dairymaid is dairyman.
A Printe is the opposite gender of Printecess