Old maid

A term used in previous decades to indicate an unmarried woman who was past the usual or legal age for marrying (and sometimes also considered unlikely to marry),spinster originally referred to a woman whose occupation was to spin. Several dictionaries flag it as a derogatory term. A synonymous, but more pejorative, term is Old Maid.

Long before the Industrial Age, "spinster" denoted girls and women who spun wool. According to the Online Etymological Dictionary, spinning was "commonly done by unmarried women, hence the word came to denote" an unmarried woman in legal documents from the 1600s to the early 1900s, and "by 1719 was being used generically for 'woman still unmarried and beyond the usual age for it' ". As a denotation for unmarried females in a legal context, the term dates back to at least 1699, and was commonly used in banns of marriage of the Church of England where the prospective bride was described as a "spinster of this parish".

The Oxford American Dictionary tags "spinster" (meaning "...unmarried woman, typically an older woman beyond the usual age for marriage") as "derogatory" and "a good example of the way in which a word acquires strong connotations to the extent that it can no longer be used in a neutral sense."

The 1828 and 1913 editions of Merriam Webster's Dictionary defined spinster in two ways: "1. A woman who spins, or whose occupation is to spin. 2. Law: An unmarried or single woman." By the 1800s, the term had evolved to include women who chose not to marry. During that century

middle-class spinsters, as well as their married peers, took ideals of love and marriage very seriously, and ... spinsterhood was indeed often a consequence of their adherence to those ideals. ... They remained unmarried not because of individual shortcomings but because they didn't find the one "who could be all things to the heart".(subscription required)

One 19th century editorial in the fashion publication Peterson's Magazine encouraged women to remain choosy in selecting a mate — even at the price of never marrying. The editorial, titled "Honorable Often to Be an Old Maid", advised women: "Marry for a home! Marry to escape the ridicule of being called an old maid? How dare you, then, pervert the most sacred institution of the Almighty, by becoming the wife of a man for whom you can feel no emotions of love, or respect even?"

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Wikipedia