so-and-so
UK: ˈsəʊ ən(d) səʊ | US: ˈsoʊ ən(d) soʊ
n. 1. A placeholder name for an unspecified or generic person (often mildly derogatory).
n. 2. A person whose name is forgotten, unimportant, or deliberately omitted.
The term "so-and-so" originated in the mid-19th century as a reduplicative phrase combining "so" (from Old English "swā," meaning "thus" or "in this way") and "and" (a connective). It functions as a euphemistic placeholder, often implying vagueness or mild disdain. The repetition of "so" emphasizes anonymity or triviality, reflecting its use for unnamed or unimportant individuals.
"I ran into so-and-so at the grocery store yesterday."
"The letter was signed by some so-and-so from the legal department."
"She kept talking about what so-and-so said at the party."
"Don’t listen to him—he’s just another so-and-so with an opinion."
"The form requires you to list your name, address, and so-and-so."