inheritrix

/ɪnˈhɛrɪtrɪks/
noun
  1. A woman who inherits property, money, or a title from someone who has died.
    • In the story, the inheritrix must decide whether to sell the family estate or keep it.
    • As the only child, she became the inheritrix of her father's entire fortune.
    • The old mansion was passed down to the young inheritrix after her aunt's death.
Synonyms