Learn how to say Spinster correctly in English with this tutorial pronunciation video.
Oxford dictionary definition of the word spinster:
an unmarried woman, typically an older woman beyond the usual age for marriage.
late Middle English (in the sense ‘woman who spins’): from the verb spin + -ster; in early use the term was appended to names of women to denote their occupation. The current sense dates from the early 18th century
The development of the word spinster is 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. From the 17th century the word was appended to names as the official legal description of an unmarried woman: Elizabeth Harris of London, Spinster. This type of use survives today in some legal and religious contexts. In modern everyday English, however, spinster cannot be used to mean simply ‘unmarried woman’; it is now always a derogatory term, referring or alluding to a stereotype of an older woman who is unmarried, childless, prissy, and repressed.