spinster

/ˈspɪnstər/
noun
  1. An older woman who has never been married; sometimes used in a neutral or slightly old-fashioned way, but can also be considered outdated or offensive.
    • Many people now avoid the word spinster because it feels judgmental.
    • The novel's main character is a spinster who lives alone with her cats.
    • In the past, a woman who never married was often called a spinster.
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