1
: a person who reigns over a kingdom or empire: such as
a
: a sovereign ruler
b
: a constitutional (see constitutional entry 1 sense 3) king or queen
2
: one that holds preeminent position or power
cotton, monarch of the textile world—
Wall Street Journal
Wall Street JournalExamples of monarch in a Sentence
a new history of French monarchs
the ruling monarch of Britain at that time was Queen Elizabeth I
Recent Examples on the Web
Hugely popular Princess Aiko, the only daughter of Emperor Naruhito and Empress Masako, cannot be her father’s successor, even though she is supported by much of the public as a future monarch.
—Mari Yamaguchi, Twin Cities, 6 Sep. 2025
That those women and men who died to end slavery, to win basic rights, to win the vote, to dethrone monarchs and destroy the ancien régime, to fight Czarism and fascism and Nazism and imperialism and apartheid, were in some way our moral betters.
—Jack Sheehan
september 4, Literary Hub, 4 Sep. 2025
Each year, millions of monarchs migrate from Canada and the United States to the oyamel fir trees of Michoacán and Estado de México.
—Gaby Keiderling, Robb Report, 4 Sep. 2025
Starting with plants that attract monarchs is an approachable way to support your local ecosystem.
—Alyssa N. Salcedo, jsonline.com, 4 Sep. 2025
See All Example Sentences for monarch
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Mari Yamaguchi, Twin Cities, 6 Sep. 2025
That those women and men who died to end slavery, to win basic rights, to win the vote, to dethrone monarchs and destroy the ancien régime, to fight Czarism and fascism and Nazism and imperialism and apartheid, were in some way our moral betters.
—Jack Sheehan
september 4, Literary Hub, 4 Sep. 2025
Each year, millions of monarchs migrate from Canada and the United States to the oyamel fir trees of Michoacán and Estado de México.
—Gaby Keiderling, Robb Report, 4 Sep. 2025
Starting with plants that attract monarchs is an approachable way to support your local ecosystem.
—Alyssa N. Salcedo, jsonline.com, 4 Sep. 2025
See All Example Sentences for monarch
Cite this Entry
“Monarch.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/monarch. Accessed 9 Sep. 2025.
Copy CitationKids Definition
monarch
noun
mon·arch
ˈmän-ərk 
-ˌärk
1
: a person who reigns over a kingdom or empire: as
a
: a ruler who has total power
absolute monarch
b
: someone who acts primarily as chief of state and who has only limited powers
constitutional monarch
2
: someone or something like a monarch
the oak is the monarch of the forest
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