Wear the pants
Meaning
Be the dominant partner in a relationship or group
Usage
Used when describing who makes the decisions
Origin & History
Origins and dates here are approximate summaries. Many idioms have disputed or unknown origins, and not every date has been checked against a historical dictionary, so treat specific dates and stories as a starting point rather than a citation.
Historically, men wore pants to show authority
Used since the early 20th century in family and workplace talk