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general::
Phrase(s): or what?
a way of adding emphasis to a yes-or-no question the speaker has asked. (In effect, if it wasn’t what I said, what is it?) • Bob: Now, is this a fine day or what? John: Looks okay to me. • Tom: Look at Bill and Mary. Do they make a fine couple or what? Bob: Sure, they look great.
McGrawhill's American Idioms And Phrasal Verbs