Interesting words: “unpresidented” (new word)

The words “unprecedented”, meaning never to have happened previously, has been morphed into a new word “unpresidented”, meaning that a president acts in a way that no president has ever done before. It was used to describe Trump’s outbursts on Twitter, and actually originated as sarcasm from his own misspelling of the real word “unpresidented”.
The Urban Dictionary has many interesting definitions invented by its collaborators.