In English there are no masculine or feminine forms. English uses gender specific nouns for male or female.
The noun 'servant' is a common gender noun, a word for a male or a female worker.
The gender of a lady servant is female. Some nouns for female servants are housekeeper, lady in waiting, maid, milk maid, house maid, or domestic.
The feminine form of ami is amie. The feminine plural is amies.
In English there are no masculine or feminine forms. English uses gender specific nouns for a male or a female, such as male and female. The gender noun for a female servant can be maid or housemaid.
The feminine form of bajo is baja. The feminine plural is bajas.
The feminine form of alumnus is alumna. The feminine plural is alumnae.
Baroness is the feminine form.
Mistress is the feminine form of master. It is already in feminine form.
The feminine form of charmant is charmante. The feminine plural is charmantes.
The feminine form for host is "hostess."
the name serviteur has no feminine. It is nowadays grammatically acceptable to 'feminise' these nouns, for instance by putting a feminine article before them. 'un serviteur' could then become 'une serviteur' (but most French would balk when hearing that) With slightly different meanings, 'domestique' is either feminine or masculine, the noun 'servant' has a feminine variation ('servante').
The adjective form of servant is "servile."
The feminine form of benefactor is benefactress.