In English there are no masculine or feminine forms. English uses gender specific nouns for male or female.
The gender specific noun for a female donkey is "jenny".
The gender specific noun for a male donkey is "jack."
that is the masculine form
A male donkey is called a jack and a female donkey is called a jenny.
Gerald is the masculine form. The feminine form is Geraldine.
Dennis is the masculine form of Denise.
The masculine plural form of malo is malos
Master is the masculine form. Mistress would be the feminine form.
The masculine form for "tendre" in French is "tendre" as well. The word does not change in form based on gender.
The masculine form of "duke" is "duke," and the feminine form is "duchess."
Любымый -- lyubimiy
The masculine form of "trendy" in French is "tendance".
The masculine plural form of "amable" is "amables."
It is spelled Führer, and it is the masculine form of "the leader"