king

king — noun

1. A man who rules a country as its highest leader, usually because he was born int

1.nounA2
Definition

A man who rules a country as its highest leader, usually because he was born into a royal family and inherited the position from a parent.

Example

King Charles III became the monarch of the United Kingdom after the death of his mother, Queen Elizabeth II.

article + title: 'King [Name] [numeral]'

The young king sat on his golden throne and listened carefully to the requests of his people.

Common collocations
  • king of + country
  • crown
  • throne
  • king and queen
  • reign
Synonyms
  • monarch

    more formal; can be male or female

  • sovereign

    formal; emphasises supreme authority

  • ruler

    broader term; can apply to any leader of a country, not just royalty

Antonyms
  • subject

    a person under the rule of a monarch

  • commoner

    a person without royal rank

Usage Note

The title King is always capitalised when used before a name (King Abdullah) or as a direct form of address ('Your Majesty'). When referring to the role in general, lowercase is used ('a king must serve his people').

Common Mistakes

The king of Thailand is a constitutional monarch.
The King of Thailand is a constitutional monarch.
When referring to a specific country's monarch with the office title, 'King' is capitalised.

2. A person, animal, or thing widely recognised as the top figure within a particul

2.nounB2
Definition

A person, animal, or thing widely recognised as the top figure within a particular group, sport, business, or field of activity.

Example

Many fans call Pelé the king of football because of his incredible skill on the field.

pattern: king of + [domain]

The lion is often called the king of the jungle, but lions actually live on grasslands and savannas.

Common collocations
  • king of
  • undisputed king
  • crowned king
  • reigning king
Synonyms
  • champion

    specifically in competitions and sports

  • top dog

    informal; the most powerful person in a group

  • leader

    neutral; less emphatic than 'king'

Antonyms
  • unknown

    someone not famous or recognised in a field

  • beginner

    someone just starting out

Grammar Patterns

king of + noun phrase

Usage Note

This sense is almost always used with 'the' and followed by 'of + [domain]'. Common in sports journalism, entertainment writing, and nature documentaries. The subject is often a group or category rather than an individual political entity.

Common Mistakes

The king of doctors is Dr. Smith.
Dr. Smith is known as the king of heart surgery.
The domain should be a field or activity, not a person's generic profession.

3. In chess, each player has one king piece. When a king is cornered with no way to

3.nounA2
Definition

In chess, each player has one king piece. When a king is cornered with no way to escape, that player loses. The king travels just one step per turn, in any direction.

Example

In chess, you lose the game if your king is trapped and cannot move to a safe square.

passive: king is trapped / king is captured

Selim moved his king one square forward to avoid a check from his opponent's rook.

Common collocations
  • king safety
  • king side
  • check the king
  • king and pawn

Usage Note

Distinguish from sense 1 (MALE RULER): in chess writing, 'king' is never capitalised and always refers to the game piece. Frequently appears in the compound 'king safety' (strategy of protecting one's king from attack).

Common Mistakes

He moved his King to safety.
He moved his king to a safe square.
In chess contexts, 'king' is lowercase unless starting a sentence.

4. A playing card that features a crowned king figure. In most card games, it ranks

4.nounA2
Definition

A playing card that features a crowned king figure. In most card games, it ranks above the queen and below the ace.

Example

Élise won the round when she drew the king of hearts from the deck of cards.

pattern: king of + [suit]

In poker, a hand with two kings and three smaller cards is called a pair of kings.

Common collocations
  • king of hearts
  • king of spades
  • king of diamonds
  • king of clubs
  • pair of kings

Usage Note

Always lowercase unless starting a sentence. The four suits produce: king of hearts, king of diamonds, king of clubs, king of spades. In some games (e.g. poker), the king is sometimes abbreviated as 'K'.

Common Mistakes

I drew a King of hearts.
I drew the king of hearts.
Use lowercase and the definite article when naming a specific card.

5. In the game of checkers (also called draughts), a piece that has reached the opp

5.nounB1
Definition

In the game of checkers (also called draughts), a piece that has reached the opponent's back row and been promoted. It can now move and capture in any diagonal direction, unlike a regular piece that only moves forward.

Example

When Kabir's piece reached the far end of the board, he stacked it to crown it as a king.

process: crown / promote to make a king

A king in checkers can move in any diagonal direction, making it stronger than a regular piece.

Common collocations
  • crown a king
  • king me
  • double king
  • king row
Synonyms
Antonyms
  • regular piece

    an uncrowned checker that can only move forward

  • man

    term for an uncrowned checker in draughts

Usage Note

This sense applies only in the game of checkers / draughts, not in chess. In British English the game is usually called 'draughts' and the promoted piece is sometimes called a 'crowned piece' or 'double piece' instead of 'king'.

Common Mistakes

I crowned my piece in chess to make a king.
I crowned my piece in checkers to make a king.
In chess, pieces are not 'crowned' or promoted in this way.

6. Riley B. King (1925–2015), known professionally as B.B. King, an American blues

6.nounB1
Definition

Riley B. King (1925–2015), known professionally as B.B. King, an American blues guitarist, singer, and songwriter. He was famous for his expressive guitar style and for popularising the blues worldwide.

Example

B.B. King named his guitar Lucille, and it became one of the most famous instruments in blues music.

The audience cheered when B.B. King played his famous song 'The Thrill Is Gone' on stage.

notable song: 'The Thrill Is Gone'

7. Billie Jean King (born 1943), an American former professional tennis player. She

7.nounB1
Definition

Billie Jean King (born 1943), an American former professional tennis player. She won 39 Grand Slam titles and became famous for her fight for gender equality in sports.

Example

Billie Jean King beat Bobby Riggs in the famous 'Battle of the Sexes' tennis match of 1973.

historical event: Battle of the Sexes

Billie Jean King helped start the Women's Tennis Association and demanded equal prize money for all players.

8. Ernest Joseph King (1878–1956), an American naval officer who served as the Chie

8.nounC1
Definition

Ernest Joseph King (1878–1956), an American naval officer who served as the Chief of Naval Operations and Commander in Chief of the United States Fleet during World War II.

Example

Ernest J. King was a top American naval leader during the war in the Pacific.

WWII role: Commander of US Fleet

Admiral King helped plan major naval operations that turned the tide of World War II at sea.

9. Martin Luther King Jr. (1929–1968), an American Christian minister and civil rig

9.nounA2
Definition

Martin Luther King Jr. (1929–1968), an American Christian minister and civil rights leader. He led non-violent protests against racial segregation and won the Nobel Peace Prize in 1964.

Example

Martin Luther King Jr. gave his famous 'I Have a Dream' speech during the March on Washington.

famous speech: 'I Have a Dream'

Martin Luther King Jr. believed in peaceful protest and fought for equal rights for all people.

Usage Note

Commonly referred to as 'Dr. King' or 'Martin Luther King' in shorter references. His full name includes 'Jr.' to distinguish him from his father, Martin Luther King Sr., who was also a minister.

Common Mistakes

Martin Luther King was a president.
Martin Luther King was a civil rights leader.
He was never a political president; he was a minister and activist.

10. Rufus King (1755–1827), an American politician and diplomat. He was a delegate t

10.nounC1
Definition

Rufus King (1755–1827), an American politician and diplomat. He was a delegate to the Constitutional Convention, a US Senator, and an ambassador to the United Kingdom.

Example

Rufus King helped write the United States Constitution in 1787.

founding role: Constitutional Convention delegate

Rufus King served as a US Senator and later as the American ambassador to Britain.

11. Stephen King (born 1947), an American author of horror, suspense, and fantasy no

11.nounA2
Definition

Stephen King (born 1947), an American author of horror, suspense, and fantasy novels. He is one of the best-selling writers of all time, with books like 'The Shining' and 'It'.

Example

Stephen King has written more than sixty novels and many have been made into popular films.

prolific output: 60+ novels

Readers love Stephen King's horror stories because the plots are so exciting and frightening.

Usage Note

Often referred to as 'the King of Horror' — this uses the TOP PERSON/THING sense. His works are frequently studied in popular culture courses at universities.

12. William Lyon Mackenzie King (1874–1950), a Canadian statesman who served as the

12.nounC1
Definition

William Lyon Mackenzie King (1874–1950), a Canadian statesman who served as the tenth Prime Minister of Canada. He led the country through the Great Depression and World War II.

Example

Mackenzie King was Canada's longest-serving prime minister, leading for more than twenty years.

notable: longest-serving Canadian PM

Prime Minister Mackenzie King worked closely with Winston Churchill during World War II.

Usage Note

Commonly referred to as 'Mackenzie King' rather than 'William King'. His grand-uncle was William Lyon Mackenzie, a leader of the 1837 Rebellion in Upper Canada.

13. William Rufus de Vane King (1786–1853), an American politician who served as the

13.nounC1
Definition

William Rufus de Vane King (1786–1853), an American politician who served as the 13th Vice President of the United States under President Franklin Pierce.

Example

William R. King was the only US vice president to take the oath of office in a foreign country.

unique fact: sworn in abroad

Senator King represented Alabama in Washington for much of his political career.

Idioms

An extremely large amount of money, often used to describe a very high price or cost.

The painting sold for a king's ransom at the auction.

She paid a king's ransom for that vintage car.

A person who is considered the best or most important in a particular field or activity, even without an official title.

Maya is the uncrowned queen of modern dance.

Many call him the uncrowned king of jazz music.

king — adjective

Word family

  • kingly
    adjectiveB2
  • kingdom
    nounA2
  • kingship
    nounC1
  • king-size
    adjectiveB1
  • kingpin
    nounC1

Synonym discussion

Sense: noun/1

All four words describe a person who holds supreme authority over a territory, but they differ in scope and formality. 'King' is the most common and specific term for a male hereditary head of a country. 'Monarch' is a gender-neutral formal term covering kings, queens, and emperors — it emphasises the institution rather than the person. 'Sovereign' is the most formal and legalistic of the group, focusing on the idea of independent supreme authority without any higher power. 'Ruler' is the broadest term and can apply to any leader of a country, including elected presidents and dictators, not just royalty. 'Emperor' is reserved for a monarch who rules an empire, typically larger than a kingdom. For example: Queen Elizabeth II was a monarch and sovereign of the UK, but she was not an emperor. A military dictator is a ruler but not a king.

Common collocations

Phrases

  • crown someone king
  • proclaim someone king
  • long live the king
  • king's ransom

Prepositions

  • king of

Etymology

Proto-GermanicOld EnglishMiddle EnglishEnglish

The word 'king' comes from Old English 'cyning', which goes back to a Germanic root meaning 'son of the kin' or 'leader of the family group'. This root is related to the word 'kin' (family). The idea was that the king was the head or representative of the tribe or clan. Across Germanic languages, similar words appear: Old Saxon 'kuning', Old High German 'kuning' (modern German 'König'), Old Norse 'konungr'. The basic concept of a leader chosen from or representing the kinship group has been remarkably stable for over a thousand years.