first world

noun, often capitalized F&W

Definition of first world

: the highly developed industrialized nations often considered the westernized countries of the world

First Known Use of first world

1967, in the meaning defined above

History and Etymology for first world

after third world

Keep scrolling for more

Learn More about first world

Statistics for first world

Look-up Popularity

Time Traveler for first world

The first known use of first world was in 1967

See more words from the same year

Keep scrolling for more

More Definitions for first world

first world


English Language Learners Definition of first world

: the countries of the world that have many industries and relatively few poor people : the rich nations of the world

More from Merriam-Webster on first world

Rhyming Dictionary: Words that rhyme with first world

Comments on first world

What made you want to look up first world? Please tell us where you read or heard it (including the quote, if possible).


an act or instance of returning to life

Get Word of the Day daily email!

Test Your Vocabulary

Words from Greek and Latin Quiz

  • roman forum
  • Which of the following months comes from a Latin word for “ten”?
Spell It

Can you spell these 10 commonly misspelled words?

Word Winder's CrossWinder

Test Your Knowledge - and learn some interesting things along the way.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!