People make a clear distinction between themselves and animals because they are willing to embrace the brighter side of human nature. However, we live in a world that retains both joy and sadness, both kindness and evil, which cause humanity and natures to be different from each other. Therefore, animalistic, haughty, greedy are inevitable capabilities of human behavior. To criticize these bad natures, many authors wrote short stories or poems; for example, the biblical flood is a story in the Bible, where the god was angry with the dark human nature in the world, so he told Noah to build an ark to save some lives from the flood. Unlike the biblical flood, in The Miller's Tale, Geoffrey Chaucer challenges his reader by using the idea of ​​irony and playful diction in his language to elevate the sarcastic humor to better understand the humanity of the characters. First, Chaucer uses situational irony in the tale to show true human nature to satirical effect. There is a clear contrast in Alisoun's attitude between the beginning of the story and the night of the flood. In Alisoun's word: "I will not kiss you, for my good fortune / Do as you are, for your courtesy!" (176.179); when Nicholas wants to kiss her, she was adamant that she would not kiss him because it is strictly forbidden by her faith. She seems like a well-mannered woman even though her husband is old. Ironically suggesting that Alisoun emphasizes the word “fay” at the end of the verse to show that he is faithful. It makes the reader believe that she sticks to justice very well. Although Nicholas is handsome and young, Alisoun rejects his kiss without any hesitation. At that time, the reader thinks she is beautiful and pure. However, his faith doesn't seem so... middle of paper... any of God's secrets; however, Chaucer shows that: "And to his wife he said to his private" (495). Obviously, John doesn't want his wife to die in the flood because he loves her. Although Nicholas tells John to keep it a secret, he doesn't want to betray Alisoun and wants to protect her. In conclusion, Geoffrey Chaucer creates Miller's Tale in a sarcastic and humorous way to show the different humanities of John, Nicholas, and Alisoun. With the help of the two types of irony and playful diction, he creates a vivid image of each character, even if some dictions are difficult to understand. The story provides a complete picture of the real world. It is a true reflection of real people. Although in this story Chaucer describes the darker side of human nature, as the reader can see, the author gave him the task of arranging a miserable fate.