heaven only knows

(redirected from Heaven only knows!)

heaven only knows

No one knows (except for God or the heavens). Heaven only knows how long it will take for my application to be processed. A: "How do you think you did on your exam?" B: "Oof, heaven only knows!"
See also: heaven, know
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
See also: