Final answer:
Lady Macbeth is stronger, more ruthless, and more ambitious than her husband in Macbeth.
Step-by-step explanation:
The character who is stronger, more ruthless, and more ambitious than her husband in Macbeth is Lady Macbeth. She is depicted as a formidable and manipulative woman who goads her husband into committing regicide to fulfill their ambitions. Lady Macbeth's ruthless and ambitious nature can be seen in her soliloquies and interactions with her husband, where she shows no hesitation in executing their plans. For example, she persuades Macbeth to murder King Duncan by questioning his manhood and manipulating his sense of ambition.