Answer:
Military. to overwhelm; surprise and destroy, disable, or massacre.
Informal. to prevent from happening or succeeding; ruin; wreck.
So I guess add the man so a surprised man?
Explanation:
Answer: Scupper means to sink a ship or crew deliberately or to prevent from working or succeeding or basically to have thwarted. So a scuppered man would mean a thwarted or sunken man.
