you know who n.
used of a person whose name one knows, but prefers not to mention.
|Writings (1704) 7: Which if, said I, the News be true, / ’Tis very bad for you know who.‘Poet’s Ramble after Riches’ in|
|‘Sale of a Wife’ in Curiosities of Street Lit. (1871) 40: [title] Sale of a Wife in the Neighbourhood — Mrs. You-Know-Who.|
|Life and Adventures of a Cheap Jack 86: If you was to go into Mr. You-know-his-name’s shop, in the market-place here.|
|White Moll 166: Is dat straight wot de papers said about youse-know-who gettin’ pinched?|
|Murder in Mount Holly (1999) 52: The real problem is right here in our midst: the You-Know-Whos [...] they’re all as Red as they are black.|
|National Rev. 14 Sept. 1007: To get the real inside skinny we shall have to wait until you-know-who’s memoirs tell us what the butler really saw.|
|Something Fishy (2006) 19: I’m think of having a whip-around, see if I can raise enough for a contract on you-know-who.|