The definition of Dotard means someone who is old, weak and senile. The first known use of the word Dotard was in the 14th Century, according to the Merriam-Webster dictionary.

The reason many modern Americans were unfamiliar with Dotard is that the use of the word has been in decline ever since the mid-1800’s. The usage of the word Dotard plummeted even further after World War I and again after World War II.

Of course, Kim Jung Un did not actually use the word Dotard because he was speaking Korean. It was the official Korean state translators who used the word Dotard when translating his speech where he said, ““I will surely and definitely tame the deranged U.S. dotard with fire.”