Malarkey refers to speech or writing that is nonsensical or meaningless. It often describes statements that are exaggerated, misleading, or simply untrue. The term is commonly used to dismiss ideas or arguments that lack substance or credibility, suggesting that they are not worth serious consideration. The origin of the word is believed to be Irish-American, gaining popularity in the early 20th century. It is often used in political discourse to critique statements made by public figures, such as politicians, when their claims are seen as insincere or deceptive.