perfidy

I would, however, agree with your definition of greatness and infamy. I also tend to use a third category, importance. I think Wilson was a horrible president, who left the world worse than he found it. However, he is important. So, if I were to make a list of most important presidents, it might go: Washington, Lincoln, Wilson, Jefferson, FDR. Happily, we have had no truly infamous presidents - at least not by world-historical standards. Even our worst presidents rank pretty well when compared to the average run of national leaders throughout the world, throughout history. We are very lucky. Even someone like Nixon seems downright wholesome when compared to most Roman Emperors, but especially Caligula, Nero and Commodus.