english
1
general::
Phrase(s): What in (the) Sam Hill? Inf. What has happened?; What? (An elaboration of what. Sam Hill is a euphemism for hell. Often with the force of an exclamation. See examples for variations.) • What in Sam Hill is going on around here? • What in the Sam Hill do you think you are doing?
McGrawhill's American Idioms And Phrasal Verbs