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
Bill McKibben Natal's well-watered valleys … became by the end of the 18th century the site of a contest for supremacy … —Noel Mostert
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
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
Generally, the federal government does not need to respect local zoning regulations that conflict with federal mandates often referred to as the supremacy clause.
—Mike Hellgren, CBS News, 4 Feb. 2026
This beer company had a 10-year lock on Super Bowl commercial supremacy.
—Phaedra Trethan, USA Today, 4 Feb. 2026
The two rivals entered play in a heated race for Patriot League supremacy.
—Brendan Connelly, Boston Herald, 31 Jan. 2026
The plan, which Reuters is reporting exclusively, would give fresh momentum to SpaceX’s effort to launch data centers into orbit as Musk battles for supremacy in the rapidly escalating AI race against tech giants like Google, Meta and OpenAI.
—Echo Wang, Reuters, 29 Jan. 2026
See All Example Sentences for supremacy
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Mike Hellgren, CBS News, 4 Feb. 2026
This beer company had a 10-year lock on Super Bowl commercial supremacy.
—Phaedra Trethan, USA Today, 4 Feb. 2026
The two rivals entered play in a heated race for Patriot League supremacy.
—Brendan Connelly, Boston Herald, 31 Jan. 2026
The plan, which Reuters is reporting exclusively, would give fresh momentum to SpaceX’s effort to launch data centers into orbit as Musk battles for supremacy in the rapidly escalating AI race against tech giants like Google, Meta and OpenAI.
—Echo Wang, Reuters, 29 Jan. 2026
See All Example Sentences for supremacy
Cite this Entry
“Supremacy.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/supremacy. Accessed 11 Feb. 2026.
Copy CitationKids 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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