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Synonyms

monarch

American  
[mon-erk, -ahrk] / ˈmɒn ərk, -ɑrk /

noun

  1. a hereditary sovereign, as a king, queen, or emperor.

  2. a sole and absolute ruler of a state or nation.

  3. a person or thing that holds a dominant position.

    a monarch of international shipping.

  4. monarch butterfly.


monarch British  
/ ˈmɒnək, mɒˈnɑːkəl, mɒˈnɑːkɪəl /

noun

  1. a sovereign head of state, esp a king, queen, or emperor, who rules usually by hereditary right

  2. a supremely powerful or pre-eminent person or thing

  3. Also called: milkweed.  a large migratory butterfly, Danaus plexippus, that has orange-and-black wings and feeds on the milkweed plant: family Danaidae

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms

Etymology

Origin of monarch

First recorded in 1400–50; late Middle English, from Middle French monarche, monarch, from Late Latin monarcha, from Greek mónarchos “sole ruler, monarch”; see mon-, -arch

Explanation

If you think the Queen of England is just the coolest thing ever, then you like monarchs: hereditary rulers of countries usually known as king or queen. You might think your principal rules with absolute power, but that's not really true: there's a school board and an administration and she can't really control everything. But a monarch can. Monarch comes from the Greek mono, "one," and archon, "ruler." Many modern monarchies actually have parliaments and constitutions, leaving the monarch more symbolic than powerful. A monarch is also a particularly royal looking butterfly with orange wings and black and white spots.

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Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Despite its name, the King's Speech is not written by the monarch but by the government, which uses it to detail the laws it proposes over the next 12 months.

From Barron's • May 13, 2026

And only DeMichelle’s Marguerite has the necessary command to bring this obstreperous monarch to heel.

From Los Angeles Times • May 13, 2026

His Turner Endangered Species Fund, launched in June 1997, has worked to save gopher tortoises, monarch butterflies and leopard frogs, working mainly with private landowners.

From Barron's • May 6, 2026

It marks the King's first visit to a British overseas territory as monarch.

From BBC • May 1, 2026

Whenever the Parliament clashed with their monarch, the king would get his way by suddenly convening Parliament in a remote, unreachable part of the country.

From "An American Plague: The True and Terrifying Story of the Yellow Fever Epidemic of 1793" by Jim Murphy

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