mistress

/ˈmɪstrɪs/
noun
  1. A woman who has a continuing sexual relationship with a married man, often outside of marriage.
    • The scandal involved a politician and his mistress.
    • He left his wife and married his mistress after the divorce.
    • In the novel, the main character discovers her husband has a mistress.
  2. A woman who is in a position of authority, control, or ownership, such as the female head of a household or a female teacher.
    • The mistress of the estate welcomed her guests to the grand party.
    • She was the undisputed mistress of the kitchen, ruling over every recipe.
    • In the old days, the school mistress taught all the children in one room.
What does "mistress" mean? | whatsthatwordmean | whatsthatwordmean