a 'made-up' [='fictitious'] story/name
She was nicely 'made-up'.
(..) l was crying, and then l heard somebody come in. -Who was it, Myrtle? -l don't know. l was distraught! But they said something funny, a kind of made-up language. And l realized it was a boy, so l unlocked the door to tell him to go away and. . . -. . .l died. -Just like that? How? (..)2002 Harry Potter and the Chamber of Secrets