monarch

noun

mon·​arch ˈmä-nərk 

-ˌnärk

1

: a person who reigns over a kingdom or empire: such as

a

: a sovereign ruler

b

: a constitutional (see constitutional entry 1 sense 1) king or queen

2

: one that holds preeminent position or power

Cotton, monarch of the textile world …

—Wall Street Journal

3

: monarch butterfly

monarchal

mə-ˈnär-kəl 

mä-

adjective

or monarchial

mə-ˈnär-kē-əl 

mä-

Synonyms of monarch

• ruler
• sovereign
• emperor

Examples 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

After the Pope denied Henry's request for a divorce, the monarch established his own Church of England and changed the course of world history. —Diana Pearl, PEOPLE, 6 May 2026

In a feisty exchange with a Framingham city councilor in late March, Spilka opened up on her resistance to the audit, arguing that DiZoglio is trying to act like a monarch. —Lance Reynolds, Boston Herald, 2 May 2026

May 2, 2026 1 of 10 Who was the only other British monarch besides King Charles III to address a joint meeting of Congress? —Jeremy Mikula, NBC news, 2 May 2026

From feeding chickens at a Harlem farm to cracking jokes about the Boston Tea Party during the White House state dinner, the monarch, alongside his wife Queen Camilla, delivered a steady stream of viral moments that showed a lighter, more personal side of the royals. —Ashley Hume, FOXNews.com, 1 May 2026

Word History

Etymology

Late Latin monarcha, from Greek monarchos, from mon- + -archos -arch

First Known Use

15th century, in the meaning defined at sense 1

Phrases Containing monarch

• monarch butterfly

Rhymes for monarch

• ballpark
• benchmark
• birthmark
• daymark
• earmark
• embark
• hallmark
• landmark
• postmark
• remark
• skylark
• tetrarch

Kids 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

3

: monarch butterfly

monarchal

mə-ˈnär-kəl 

mä-

adjective

or monarchial

-kē-əl