Formal:
* Thou: Used in older English, especially in religious contexts.
* Thee: The objective case of "thou."
* Thy: The possessive form of "thou."
* Yourselves: A more archaic way of saying "you all" or "you" in a formal plural context.
Informal:
* You: While not strictly old-fashioned, "you" was used more commonly in the past than "you all."
* Y'all: A regional dialect word used in the southern United States, meaning "you all."
* Ye: An old-fashioned way of saying "you" used in some dialects, especially in Scotland.
* Thee: Often used in old-fashioned sayings like "Bless thee."
Specific Contexts:
* Sir/Madam: Used to address someone formally, especially someone older or in a position of authority.
* My good man/woman: An old-fashioned way of addressing someone in a polite but informal manner.
* My dear: A more affectionate and familiar way of addressing someone.
It's important to note that using these old-fashioned terms might sound strange or overly formal in modern English, so be mindful of the context and your audience.
Let me know if you have a specific situation in mind and I can suggest a more precise phrase.