The proper word for Donald Trump.

The word that is often thrown by the many who detest Donald Trump is 'narcissist', and while it is true that he is a narcissist, it's not that uncommon of a personality trait. Most rock starts have narcissistic aspects to their personalities, as do many politicians, doctors, movie stars and Uber drivers. Trump is several steps beyond that; he is also a megalomaniac. Famous megalomaniacs include Napoleon, Caligula, Hitler, David Koresh, Charles Manson and Glenn Beck.

When describing Trump in the future, it is best we use the more rarified term 'megalomaniac', as befits his station in life.