"Dastardly" is an adjective used to describe actions or behaviors that are cowardly, treacherous, or mean-spirited. It often refers to someone who engages in deceitful or underhanded tactics, especially when they take advantage of others. The term conveys a sense of moral failing and a lack of bravery. In popular culture, the term is often associated with villains or antagonists, such as the character Dick Dastardly from the animated series Wacky Races. This character embodies the traits of being sneaky and unscrupulous, often resorting to trickery to achieve his goals.