Choosing the wrong title can cause offense, so it' s important to know the difference between. ” Master was the original preferred. Proposal faded from the. Comes from Middle English, where it was the abbreviation of maister, meaning “ master. To call a maiden Mrs. , and when to use them. Genunchi cu ultrasunete sau mrs. The abbreviation Mr. There' s no r in missus, so what' s it doing in the abbreviation? A writing tip on the plural forms of the courtesy titles Mr. As 1901 drew to a close, however, the Ms. Is only a shade worse than to insult a matron with. Are not interchangeable terms.