How do you use knave in a sentence as noun?

Here are a few ways to use "knave" as a noun in a sentence:

* Formal: "The king's knave was caught stealing from the royal treasury."

* Informal: "That sneaky knave tried to cheat us in the card game."

* Figurative: "He was a knave in love, playing with her emotions and leaving her heartbroken."

Note: "Knave" is an archaic word, and while it can be used in a formal or literary context, it is not commonly used in everyday speech.