Formerly, it was Lady Macbeth's corrupt ambitions that mobilised the couple into evil, however it now seems that the driving force is Macbeth. In contrast, Lady Macbeth radiates a subdued, defeatist attitude. She becomes increasingly less vocal throughout the act, perhaps suggesting she is collapsing under the pressure of upholding a false facade. This juxtaposes her previous domineering role, and a lexis punctuated by imperatives and defamatory phrases toward Macbeth.