What is dramatic irony?

Dramatic Irony is a literary device used particularly in Shakespearean plays. Authors use it to create suspense and tension in the play, seldom times, and also to bring in conflict. Dramatic irony occurs when readers or audiences know more details of the plot than the characters, which gives more power to the readers than the ones taking part in the play. Audiences start speculating the storyline and also start making predictions about the events in the play. For instance, in Act 1 Scene 3 of Macbeth, the witches address Macbeth as the 'Thane of Cawdor'. The readers are aware of this fact already because, in Act 1 Scene 3, Duncan had already decreed Ross to award the title of Thane of Cawdor to Macbeth.