first world


often capitalized F&W
: the highly developed industrialized nations often considered the westernized countries of the world

Word History


after third world

First Known Use

1967, in the meaning defined above

Time Traveler
The first known use of first world was in 1967

Dictionary Entries Near first world

Cite this Entry

“First world.” Dictionary, Merriam-Webster, Accessed 3 Dec. 2023.

Love words? Need even more definitions?

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