Definition

1. Noun:

   • The planet Earth and all life upon it: Refers to the physical planet we inhabit and its human population.
   • A particular sphere of activity, interest, or existence: Denotes a distinct domain, realm, or group of people with shared characteristics.
   • Human society and its concerns: The secular or material aspects of human life, as opposed to spiritual matters.
   • A very large amount or extent: Used to emphasize a great quantity or degree.

2. Adjective:

   • Global or worldwide: Involving or affecting the entire Earth.

Usage and Examples

• Noun (The planet/humanity):

  • The world is facing a climate crisis.
  • She traveled around the world in eighty days.
  • The invention changed the world.

• Noun (A particular sphere or domain):

  • He is a famous figure in the world of finance.
  • The animal world is full of fascinating creatures.
  • The digital world has transformed communication.

• Noun (Secular/social life):

  • He is a man of the world, experienced in practical affairs.
  • Monks often renounce the world and its temptations.

• Noun (A large amount):

  • That vacation did me a world of good.
  • There's a world of difference between theory and practice.

• Adjective (Global):

  • The company is a world leader in technology. (Here, 'world' functions as a noun used attributively to modify 'leader'.)
  • They organized a world tour for the artist.

Advanced Usage and Nuances

• "For all the world": Exactly, precisely.

  • He looked for all the world like a seasoned professor.

• "Out of this world": Extremely good, wonderful.

  • The dessert was out of this world.

• "The world is your oyster": You have the freedom and opportunity to do anything or go anywhere you want in life.

  • After graduation, she felt the world was her oyster.

• "To think the world of someone/something": To have a very high opinion of; to love or admire greatly.

  • She thinks the world of her mentor.

Variants and Related Words

• Worldly (adj): Concerned with material values or ordinary life rather than spiritual affairs; experienced in the ways of society.

  • He was more interested in worldly success than spiritual growth.

• Worldwide (adj/adv): Extending or reaching throughout the world.

  • The product has achieved worldwide recognition.

• World-class (adj): Of the highest quality in the world.

  • The city built a world-class stadium.

Synonyms

• Globe (n): The Earth (often considered as a sphere).
• Earth (n): The planet on which we live.
• Realm (n): A kingdom; a field or domain of activity or interest.
• Universe (n): All existing matter and space considered as a whole; a particular sphere of activity or experience.

Common Collocations and Phrases

• Around the world: In or to many countries throughout the globe.
• End of the world: A complete catastrophe (often used hyperbolically).
• New World: The western hemisphere, especially the Americas.
• Old World: Europe, Asia, and Africa, especially regarded historically.
• Real world: The existing state of affairs, as opposed to one imagined or theoretical.
• Third World: (Historically) developing nations of Africa, Asia, and Latin America.
• World view / Weltanschauung (n): A particular philosophy of life or conception of the world.

Idioms

• Dead to the world: Fast asleep.

  • After the long hike, he was dead to the world.

• Not for the world or Wouldn't do something for the world: Would absolutely not do something.

  • I wouldn't hurt her feelings for the world.

• On top of the world: Extremely happy.

  • Winning the award made her feel on top of the world.

• Worlds apart: Completely different.

  • Their opinions on politics are worlds apart.

• World without end: Forever, eternally (often used in religious contexts).

Adjective

1. involving the entire earth; not limited or provincial in scope
   • global war
   • global monetary policy
   • neither national nor continental but planetary
   • a world crisis
   • of worldwide significance

Noun

1. all of the living human inhabitants of the earth
   • all the world loves a lover
   • she always used `humankind' because `mankind' seemed to slight the women
2. the concerns of this life as distinguished from heaven and the afterlife
   • they consider the church to be independent of the world
3. a part of the earth that can be considered separately
   • the outdoor world
   • the world of insects
4. people in general considered as a whole
   • he is a hero in the eyes of the public
5. the 3rd planet from the sun; the planet we live on
   • the Earth moves around the sun
   • he sailed around the world
6. all of your experiences that determine how things appear to you
   • his world was shattered
   • we live in different worlds
   • for them demons were as much a part of reality as trees were
7. people in general; especially a distinctive group of people with some shared interest
   • the Western world
8. everything that exists anywhere
   • they study the evolution of the universe
   • the biggest tree in existence