Overview
Ms. (American English) or Ms (British English; normally , but also , or when unstressed) is an English-language honorific used with the last name or full name of a woman, intended as a default form of address for women regardless of marital status. Like Miss and Mrs., the term Ms. has its origins in the female English title once used for all women, Mistress. It originated in the 17th century and was revived into mainstream usage in the 20th century.
It is followed by a full stop, or period, in Canada and the United States, but not many other English-speaking countries.
Historical development and revival of the term
Miss and Mrs., both derived from the then formal Mistress, like Mister did not originally indicate marital status. Ms. was another acceptable abbreviation for Mistress in England in the 17th and 18th centuries. During the 19th century, however, Mrs. and Miss came to be associated almost exclusively with marital status. Ms. was popularized as an alternative in the 20th century.
The earliest known proposal for the modern revival of Ms. as a title appeared in The Republican of Springfield, Massachusetts, on November 10, 1901:
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