Supremacy is the state of having the ultimate authority. A ruling king has supremacy over his kingdom.

When one group dominates another, it has supremacy. One country's army might have military supremacy over another, or your favorite baseball team might gain supremacy in the third game of the World Series, meaning it has power over the other team in the series. Supremacy comes from the Latin word supremus, which means highest.

Definitions of supremacy
  1. noun
    power to dominate or defeat
    synonyms: domination, mastery
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    superiority, transcendence, transcendency
    the state of excelling or surpassing or going beyond usual limits
    type of:
    ascendance, ascendancy, ascendence, ascendency, control, dominance
    the state that exists when one person or group has power over another
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