(CNN)North Korean leader Kim Jong Un had some choice words for US President Donald Trump Friday, accusing the American leader of "mentally deranged behavior."
But it was Kim's use of the term "dotard," that has set the internet alight. While not widely used today, the insult is centuries old, appearing in medieval literature from the ninth century.
Searches for the term have spiked in the wake of Kim's address, according to dictionary Merriam-Webster, which defines the term as referring to "a state or period of senile decay marked by decline of mental poise."
Kim, of course, did not say the word -- he was speaking in Korean. "Dotard" was the official English translation provided by state news agency KCNA for the Korean "늙다리미치광이" ("neulg-dali-michigwang-i"), which literally translates as "old lunatic."
Later in the KCNA translation of Kim's address, the North Korean leader advises Trump to "exercise prudence in selecting words," something the news agency seems to have taken to heart.
"Action is the best option in treating the dotard who, hard of hearing, is uttering only what he wants to say," was the full translation given of Kim's quote.
Photos: North Korea's verbal volleys
North Korea has a history of using creative language to express loathing for its enemies. Here are some of the regime's more colorful threats against the West.
March 2016: North Korea warned it would make a "preemptive and offensive nuclear strike" in response to joint U.S.-South Korean military exercises. Pyongyang issued a long statement promising that "time will prove how the crime-woven history of the U.S. imperialists who have grown corpulent through aggression and war will come to an end and how the Park Geun Hye group's disgraceful remaining days will meet a miserable doom as it is keen on the confrontation with the fellow countrymen in the north."
March 2016: North Korea warned it would make a "preemptive and offensive nuclear strike" in response to joint U.S.-South Korean military exercises. Pyongyang issued a long statement promising that "time will prove how the crime-woven history of the U.S. imperialists who have grown corpulent through aggression and war will come to an end and how the Park Geun Hye group's disgraceful remaining days will meet a miserable doom as it is keen on the confrontation with the fellow countrymen in the north."
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Photos: North Korea's verbal volleys
March 2016: Following the imposition of strict U.N. sanctions, North Korean leader Kim Jong Un said the country's "nuclear warheads need to be ready for use at any time," the North Korean state news agency KCNA reported.
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Photos: North Korea's verbal volleys
January 2016: North Korea claimed to have successfully tested a thermonuclear weapon, justifying its right to have an H-bomb on the grounds of "self defense."
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Photos: North Korea's verbal volleys
September 2015: In a statement, North Korea said its nuclear arsenal was ready for use "at any time."
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Photos: North Korea's verbal volleys
August 2015: As forces from the U.S. and South Korea took part in joint military drills. North Korea's state media referred to the exercises, which started on August 17, as "madcap" and issued a stern warning to America: "If the U.S. ignites a war in the end, far from drawing a lesson taught by its bitter defeat in the history, the DPRK will bring an irrevocable disaster and disgrace to it."
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Photos: North Korea's verbal volleys
August 2015: On August 23, as North Korean negotiators were meeting with their South Korean counterparts over current tensions, a KCTV presenter appeared on air repeating North Korea's ambitions to "destroy the warmongering South Korean puppet military."
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Photos: North Korea's verbal volleys
December 2014: The FBI said it suspected North Korea was behind a hack of Sony Entertainment, which led executives to initially cancel the theatrical release of "The Interview." The film was a comedy about an American television personality who the CIA asks to assassinate North Korean leader Kim Jong Un. North Korea threatened "merciless" action against the U.S. if the film was released, accusing the U.S. of retaliating for the hack by shutting down North Korea's Internet access. North Korea's National Defense Commission also called U.S. President Barack Obama "reckless" and a "monkey."
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Photos: North Korea's verbal volleys
July 2014: North Korea threatens to hit the White House and Pentagon with nuclear weapons. American "imperialists threaten our sovereignty and survival," North Korean officials reportedly said after the country accused the U.S. of increasing hostilities on the border with South Korea. "Our troops will fire our nuclear-armed rockets at the White House and the Pentagon -- the sources of all evil," North Korean Gen. Hwang Pyong-So said, according to The Telegraph.
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Photos: North Korea's verbal volleys
March 2013: Angered by tougher U.N. sanctions and joint military exercises by the United States and South Korea, the Supreme Command of North Korea's military vowed to put "on highest alert" the country's "rocket units" that are assigned to strike "U.S. imperialist aggressor troops in the U.S. mainland and on Hawaii and Guam and other operational zone in the Pacific." Whether Pyongyang has the will to back up such doomsday talk is a perplexing question, but there is evidence that its know-how -- in terms of uranium enrichment, nuclear testing and missile technology -- is progressing.
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Photos: North Korea's verbal volleys
February 2013: In a message to the United States and South Korea, North Korea vowed "miserable destruction" if "your side ignites a war of aggression by staging reckless joint military exercises."
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Photos: North Korea's verbal volleys
June 2012: Once again, North Korea vowed to be "merciless" in its promised attack on the United States, this time threatening a "sacred war" as it aimed artillery at South Korean media groups. North Korea was mad that South Korean journalists had criticized Pyongyang children's festivals meant to foster allegiance to the Kim family.
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Photos: North Korea's verbal volleys
April 2012: North Korea's state-run news agency reported that "the moment of explosion is approaching fast" and promised "merciless" strikes against the United States. "The U.S. had better ponder over the prevailing grave situation," it said. Later that month, Pyongyang launched a long-range rocket that broke apart and fell into the sea. The launch came during preparations for a grand party that celebrated the 100th anniversary of the birth of Kim Il Sung, the founder of North Korea.
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Photos: North Korea's verbal volleys
November 2011: North Korea's military threatened to turn the capital of South Korea into a "sea of fire," according to South Korea's Yonhap News Agency.
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Photos: North Korea's verbal volleys
2009: After the U.S. pledge to give nuclear defense to South Korea, Pyongyang threatened a "fire shower of nuclear retaliation."
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Photos: North Korea's verbal volleys
2002: U.S. President George W. Bush includes North Korea in an "axis of evil" with Iran and Iraq, which North Korea brushes off as a "little short of a declaration of war." North Korea reportedly threatened to "wipe out the aggressors." That year, North Korea also threatened to kick out international inspectors who were in the country to monitor its compliance with global nuclear nonproliferation agreements.
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What's in a word?
While the term dotard is not familiar to most English speakers today, as evidenced by the flurry of people searching for definitions of it, it has a prestigious literary history.
According to Merriam Webster, dotard comes from the Middle English word "doten" ("to dote"), and "initially had the meaning of 'imbecile' when it began being used in the 14th century."
In "Shakespeare's Insults: A Pragmatic Dictionary," Nathalie Vienne-Guerrin gives several examples of the playwright's fondness for the term. In "Taming of the Shrew," Baptista, tricked by his children and frustrated with Vincentio, commands "Away with the dotard; to jail with him."
Leonato defends himself against Claudio in "Much Ado About Nothing," telling the young soldier: "Tush, tush, man, never fleer and jest at me. I speak not like a dotard nor a fool."
