Definition of Alliteration
In Act 3, Scene 5, the Duchess uses alliteration to convey her perception of her brother’s immorality and deceptive behavior. The Duchess has just received a letter from Lord Ferdinand, and Bosola describes its content to her. Her brother has sent along wishes of love and safety. However, the Duchess understands that Ferdinand does not actually wish her well and is in fact responsible for a great deal of danger coming to her and her husband Antonio. Therefore, she does not trust the letter that Bosola has brought. She highlights her distrust by using alliteration, saying:
Thou doest blanch mischief;
Would'st make it white. See, see, like no calm weather
At sea, before a tempest, false hearts speak fair
To those they intend most mischief.
In Act 4, Scene 2, a madman enters and sings a song that seems to encapsulate the play’s trajectory of violence and darkness. The madman’s lyrics are rife with alliteration and description, and his song creates a moment of tense anticipation and reflection for the audience. This scene precedes the death of the Duchess and her children, so this external character and bard needs to thematically introduce the scenes of great violence that will follow. He sings:
Unlock with LitCharts A+Oh, let us howl some heavy note,
Some deadly dogged howl,
Sounding as from the threat’ning throat of beasts and fatal fowl,
As ravens, screech-owls, bulls and bears!