What does make thick my blood mean Macbeth?
Daniel Johnson
Published May 19, 2026
In Act I Scene 5, Lady Macbeth demands that the spirits 'Make thick [her] blood'. Here blood is seen as a natural function of the human body , one that feeds the human capacity for compassion and repentance - things she does not want. 'Make thick my blood' is a metaphor, representing life and death.