kingdom

kingdom — noun

1. a country whose head of state is a king or a queen, with the role typically pass

1.nounB1
Definition

a country whose head of state is a king or a queen, with the role typically passed from parent to child

Example

The United Kingdom has a queen as its head of state.

proper noun: the United Kingdom

Jiwoo learned about the ancient kingdom of Silla in her history class.

Common collocations
  • united kingdom
  • kingdom of
  • ancient kingdom
  • small kingdom
  • neighbouring kingdom
Synonyms
  • realm

    more poetic or formal; can also refer to non-political domains

  • monarchy

    focuses on the system of government rather than the territory

  • domain

    broader — can refer to any area of control, not necessarily royal

Antonyms
  • republic

    a country without a monarch, where citizens elect their leaders

Grammar Patterns

the Kingdom of [place]

the [Adjective] Kingdom

Usage Note

Often used with 'the' in the names of specific countries, such as 'the United Kingdom' or 'the Kingdom of Saudi Arabia'.

Common Mistakes

The Roman kingdom ruled much of Europe.
The Roman Empire ruled much of Europe.
Rome was an empire with an emperor, not a kingdom with a king.

2. a place, situation, or activity that is fully under someone's control, or one in

2.nounB1
Definition

a place, situation, or activity that is fully under someone's control, or one in which a certain quality or interest is what matters most

Example

Shirin's garden was her private kingdom, where she made all the decisions.

possessive: someone's kingdom for person's domain

Minh learned that in the kingdom of fashion, popular styles can be forgotten next year.

Common collocations
  • personal kingdom
  • private kingdom
  • kingdom of fashion
  • kingdom of music
  • someone's kingdom
Synonyms
  • domain

    less emotional, more neutral; common in formal and professional contexts

  • territory

    can be literal (land) or figurative (area of responsibility)

  • realm

    slightly formal; often used for abstract areas ('the realm of politics')

Grammar Patterns

someone's kingdom

the kingdom of [quality/activity]

Usage Note

Frequently used in possessive constructions ('his kingdom', 'her kingdom') or with 'of' ('the kingdom of music'). This is a figurative extension of the literal sense — no actual king or queen is involved.

Common Mistakes

The director's kingdom included three departments.
The director's domain included three departments.
'Kingdom' suggests very personal, almost emotional control; for professional reporting lines, use 'domain' or 'area'.

3. a particular area or type of activity or knowledge, seen as a world with its own

3.nounB2
Definition

a particular area or type of activity or knowledge, seen as a world with its own rules and people

Example

When Hamza started violin lessons at age seven, he entered the kingdom of classical music.

pattern: the kingdom of [field]

Aoi discovered that in the kingdom of computer programming, new languages appear almost every year.

Common collocations
  • kingdom of classical music
  • kingdom of science
  • kingdom of literature
  • kingdom of film
Synonyms
  • world

    more common and less formal ('the world of fashion')

  • sphere

    more formal, often used in academic contexts

  • field

    the most neutral and common word for an area of activity or study

Grammar Patterns

the kingdom of [field]

Usage Note

Almost always appears in the fixed phrase 'the kingdom of + [field]'. Unlike sense 2, this sense does not suggest personal control — it simply describes a broad area of human endeavour.

Common Mistakes

She rules the kingdom of marketing at her company.
She runs the marketing department at her company.
Use 'kingdom of' for broad fields, not specific teams or departments.

4. one of the main groups that scientists use to sort living things and natural obj

4.nounB1
Definition

one of the main groups that scientists use to sort living things and natural objects by their shared features

Example

All mammals, from mice to whales, belong to the animal kingdom.

biological classification: animal kingdom

In biology class, Pedro learned about the five kingdoms of living organisms.

Common collocations
  • animal kingdom
  • plant kingdom
  • fungi kingdom
  • mineral kingdom
  • five kingdoms
  • kingdom of living things
Synonyms
  • division

    sometimes used in botany as equivalent to phylum, not kingdom

  • taxonomic group

    a general term for any level of classification

  • phylum

    a level below kingdom in biological classification

Grammar Patterns

the [adjective] kingdom

kingdom of [organism type]

Usage Note

Commonly paired with 'animal', 'plant', 'fungi', or 'mineral' to refer to the major biological groups. In modern taxonomy, scientists typically recognise five or six kingdoms, though some systems use a rank called 'domain' above kingdom.

Common Mistakes

Lions belong to the kingdom of Panthera.
Lions belong to the animal kingdom, and their genus is Panthera.
'Kingdom' is the broadest grouping in traditional classification; a specific group like Panthera is a genus, not a kingdom.
Idioms

to destroy someone or something completely, especially with a powerful explosion

The demolition team blew the old hotel to kingdom come in just ten seconds.

One wrong move with the gas canister could blow us all to kingdom come.

for an extremely long time; in a way that seems to last forever

We could sit here waiting for a bus until kingdom come if we do not check the timetable.

Aaron's uncle can talk about his fishing trips till kingdom come.

To destroy someone or something completely in an explosion.

The bomb blew the old building to kingdom come.

Did the fireworks blow the shed to kingdom come?