Your comment is glib, but you're not wrong. It wasn't even a word at the time. "AREPO unknown, likely a proper name, either invented or, perhaps, of Egyptian

Your comment is glib, but you're not wrong. It wasn't even a word at the time. "AREPO unknown, likely a proper name, either invented or, perhaps, of Egyptian origin, e.g. coded form of the name Harpocrates or Hor-Hap (Serapis)." However, I do think that the concept of word squares in general is still "cool", and this one is important because of its history.