knave

The word "knave" carries a whiff of history and a sting of disapproval. Originally derived from the Old English word for "boy," it referred to a young male servant in medieval times, especially at court—a sort of junior attendant. By the 16th century, however, its meaning began to darken. It evolved to describe someone dishonest, deceitful, or unscrupulous—essentially, a rogue or a scoundrel.

A knave isn't necessarily violent; they are more likely to be cunning and manipulative. They might cheat at cards, spread rumors, or betray trust for personal gain. Think of the sly fox in a fable—that is the essence of a knave. The older sense of the word also survives in cards: in some traditional or formal usage, the Jack was called the "Knave," the lowest-ranking face card in the deck.

Shakespeare frequently used "knave" as an insult, sometimes playfully among friends, but often to imply a serious lack of integrity. In King Lear, for instance, the character Oswald is famously called a "base, proud knave." While the word has largely fallen out of common everyday speech, lending it an archaic and literary feel, it remains a staple of historical fiction and poetry.

While a villain might be openly evil or destructive, a knave is the sly, untrustworthy character you wouldn't want to do business with—a trickster who operates through deception rather than brute force. It suggests a subtle but significant moral failing.