supremacy
noun
su·prem·a·cy
sə-ˈpre-mə-sē 
sü-
also -ˈprē-
plural supremacies
1
: the quality or state of being supreme
especially
: a position of unquestioned authority, dominance, or influence
military/naval supremacy
In the 20th century, two completely different models of how to run an economy battled for supremacy. —
Bill McKibben
Natal's well-watered valleys … became by the end of the 18th century the site of a contest for supremacy … —Noel Mostert
Every high school boasts its elite squad of lookers: sparkling teeth, merciless anatomy, sunny filaments of hair … . Between classes, they parade down the halls, trooping their supremacies like Clydesdales. —Richard Lacayo
2
: ultimate authority or power
belief in the supremacy of God
Synonyms of supremacy
Examples of supremacy in a Sentence
the Roman empire had supremacy over the entire Mediterranean world
the supremacy of cashmere among wools accounts for its high price
Recent Examples on the Web
Oregon coach Dan Lanning, the former Georgia defensive coordinator who also coached at Alabama and Arizona State, among other schools, says the Big Ten has made a strong claim to national supremacy that will be on display in the semifinal game.
—Charles Odum, Chicago Tribune, 8 Jan. 2026
Nothing flexes supremacy like a reverse somersault on one foot, landing on a blade as thick as a MacBook Air screen, being just a bonus element of a program.
—Marcus Thompson Ii, New York Times, 7 Jan. 2026
The dramatic ad juxtaposes news reports of spiking costs of living, anguished-looking residents in their homes and footage of Lamont laughing, eating pizza and declaring New Haven’s pizza supremacy.
—Christopher Keating, Hartford Courant, 6 Jan. 2026
The Spurs, who acquired De’Aaron Fox from the Kings, are built around generational talent Victor Wembanyama and seem poised to compete with the Thunder for Western Conference supremacy for the foreseeable future.
—Chris Biderman, Sacbee.com, 3 Jan. 2026
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Cite this Entry
“Supremacy.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/supremacy. Accessed 13 Jan. 2026.
Kids Definition
supremacy
noun
su·prem·a·cy
sə-ˈprem-ə-sē
plural supremacies
1
: the quality or state of being supreme
2
: supreme authority or power
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