The words Master and Mistress gave rise to Mr (for Mister) and Mrs/Miss/Ms.
Nowadays the term Master is only used for boys and young men, while Mister is used to formally address anyone without a knighthood or informally address someone whose name you do not know.
The plural form of Mr is Messrs. For example
- when Messrs Pittman and Smith arrived
- when the Messrs Smith arrived
Regarding Miss, Mrs, Ms – I always tell people to use Ms. The formal use of these titles is
Miss Jane Bowden (single)
Mrs Roger Mole (married to Roger Mole)
Mrs Jane Mole (divorced from or the widow of Mr Mole)
To avoid all this just use Ms (pronounced Mz)
