The feminine form of charmant is charmante. The feminine plural is charmantes.
The feminine form of benefactor is benefactress.
Tragedienne
Enemy is the full form of the word enemy. It has many meanings, including someone who hates another (and vice versa) or someone who attacks another.
A stallion is a male horse that has not been neutered so he is capable of impregnating a female horse. The feminine form of stallion is a mare.
There isn't one... the word 'enemy' has no gender.
The feminine form of ami is amie. The feminine plural is amies.
Mistress is the feminine form of master. It is already in feminine form.
The feminine form of a baron is a baroness.
The feminine form of alumnus is alumna. The feminine plural is alumnae.
The feminine form of bajo is baja. The feminine plural is bajas.
The feminine form of charmant is charmante. The feminine plural is charmantes.
The feminine form of benefactor is benefactress.
The feminine form of groom is bride. The female partner in a marriage.
The feminine form of the name Ronald is Ronaldine.
The feminine form of Duke is Duchess.
The feminine form of grandfather is grandmother.