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Phrase(s): wear the britches (in the family) [and] wear the pants (in the family)
Rur. to be in charge in the family. • Jane bosses her husband around something scandalous. It’s clear that she wears the britches in the family. • I don’t intend to let my wife wear the pants in the family. • Mary’s a strong-minded woman, but her husband still wears the britches.
McGrawhill's American Idioms And Phrasal Verbs