Masculine and feminine forms are referred as Gender. Gender is assigned to several nouns in English grammar. It has no role to play with the biological gender. The gender of noun causes the simultaneous change in adjectives and spelling as prescribed in grammar rules.
Examples of masculine and feminine gender
masculine - feminine
Grandfather - grandmother
husband - wife
man - woman
Therefore, the masculine form of 'heiress' is heir.
Patty Hearst.
Alfher (masculine, ancient Germanic) Alvar (masculine, Swedish) Bellatrix (feminine, Astrology-based) Brynjar (masculine, Norwegian or Icelandic) Charles (masculine, English or French) Clancy (masculine, Irish or English) Dieter (masculine, German) Duncan (masculine, Scottish or English) Earl (masculine, English) Einar (masculine, Scandinavian) Fionnlagh (masculine, Irish or Scottish) Gunnar (masculine, Scandinavian or Norse Mythology-based) Gunther (masculine, German or German Mythology-based) Hera (feminine, Greek Mythology-based) Herod (masculine, Biblical) Herodotus (masculine, Ancient Greek) Hjalmar (masculine, Scandinavian) Humbert (masculine, German; French; English or Ancient German) Humphrey (masculine, English) Ingvar (masculine, Scandinavian) Ivor (masculine, Irish; Scottish; Welsh or British) Jimmu (masculine, Far East Mythology-based) Kemp (masculine, English) Ludwig (masculine, German) Murchadh (masculine, Irish or Scottish) Ryder (masculine, Modern English) Takeshi (masculine, Japanese) Vercingetorix (masculine, Ancient Celtic) Vidar (masculine, Scandinavian or Norse Mythology-based)
Feminine
masculine : un porc
Oeuf is a French word. It is masculine.
The masculine is heir. The feminine is heiress.
the female is an heiress
In English there are no masculine or feminine forms. English uses gender specific nouns for male or female.The noun heir is a common gender noun as a word for a person who inherits.The noun heir is also a gender specific noun for a male.The corresponding gender specific noun for a female is heiress.
In English there are no masculine or feminine forms. English uses gender specific nouns for male or female; for example:The noun heir is used for a male or a female; the noun heiress is used for a female only.The nouns heir and heiress are both common nouns.
heiress's
Elena Heiress is a pornstar.
Heiress.
The Troubles of an Heiress was created in 1914.
Pop Heiress was created in 1993.
The opposite of heir is heiress. Heir is the male beneficiary while a heiress refers to a female who is to inherit wealth.
Paris Hilton is a very slutty heiress.
Confessions of an Heiress has 192 pages.