Definition of "the Devil"

What’s all this!-⁠-⁠-what’s here to do!-⁠-⁠-what the Devil are you all about!-⁠-⁠-Zounds! who do you want here, Mr. Trueman?

1771, Amyas Griffith, The Swadler. A New Comedy of Three Acts., Clonmell: […] Edward Collins, page 38

Who the Devil are you? Where the Devil do you come from / And what the Devil are you doing crusted up like a cloud-cuckoo?

1982, The London Magazine, page 3

“Whatever did happen to you, sir? How the Devil did ye get captured? Once the Dons ran off, we couldn’t find hide nor hair of you.”

2015, Dewey Lambdin, Kings and Emperors, Canelo, published 2020