Historically, 'keep house' often referred to women's roles, but it's not gender-specific in modern usage. He decided to keep house while his wife pursued her career.
Pro Tip 2/3
Shared Responsibility
'Keep house' can imply shared duties in a household, not just one person's responsibility. They both work, but they keep house together on weekends.
Pro Tip 3/3
Full-time Job
Some may choose 'keep house' as their full-time role, often undervalued in society. After the baby arrived, Sam decided to keep house full-time.