A drake is a male duck, and the female is simply called a duck, or a hen.
Parrot
That would be a lioness.
The opposite gender for master is Mistress. A mistress is a dominant female creature, such as a lioness to a lion.
The opposite gender for an ox is cow, specifically a female ox.
An ox is a neutered male bovine. The opposite gender to an ox is a female bovine, commonly known as a cow.
duck
A duck is a female and the opposite of that is a drake (male)
Some people use "duck" specifically for adult females and "drake" for adult males, others use "hen" and "drake", respectively.
A male duck is a drake, a female duck is a hen.
A drake is a male goose.
Doctor is a neuter gender
Opposite gender of Filipino: Filipina
Clot is not gender specific.
Opposite gender of a Filipino: FILIPINA
An emperor is the opposite in gender to an empress.
The opposite gender for Joseph is Josephine.
The opposite gender of giantess is giant.