patriarchy

With its root -arch, meaning "ruler, leader", a patriarch is a man who dominates something, even if it's just a family. In Christianity, the term is used for a few leading figures who appear early in the Old Testament, including Methuselah, Abraham, Isaac, and Jacob; in the Eastern Orthodox church, a patriarch is usually the equivalent of a bishop. Outside of the field of anthropology, patriarchy didn't start to be used much until the 1970s, when the women's movement gained a huge following. Many feminists have claimed that all Western societies are patriarchal—that is, that they systematically enable men to dominate women. But there's plenty of disagreement about how this is done, and the word isn't discussed as often as it used to be.