poleaxedpole‧axed /ˈpəʊlækst $ ˈpoʊl-/ adjective [not before noun] especially British English 
1informal very surprised and shocked: 
I was poleaxed when I heard I’d passed the exam.2unable to stand because something has hit you very hard: He staggered and collapsed as if poleaxed.
1informal very surprised and shocked: I was poleaxed when I heard I’d passed the exam.2unable to stand because something has hit you very hard: He staggered and collapsed as if poleaxed.