Definition of Hyperbole
In Act 1, Scene 1, the Duchess uses hyperbole to express herself to Antonio. She and Antonio have been dancing around their feelings, unable to communicate because of their class differences and the pressure on the Duchess to never remarry. Their relationship hasn’t been made explicit yet, and the pair have been communicating through pun and undertone exclusively. Therefore, when the Duchess finally expresses herself honestly, her exaggerated language makes the confession even more emotionally resonant. She is finally able to say how she feels, and though the situation she describes is an impossibility, her overblown language helps the audience understand the gravity of her confession. She says:
Go, go brag
You have left me heartless! Mine is in your bosom:
I hope ‘twill multiply love there