fault line

noun

: something resembling a fault : split, rift
… a major conceptual fault line in foreign policy …Morton Kondracke

Examples of fault line in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
The risk-sorting dynamic that’s driving adaptation is also opening new and deepening existing financial fault lines in neighborhoods like this. The Conversation, Fortune, 12 June 2026 The fault lines between young and old are real. Joshua Rothman, New Yorker, 12 June 2026 The fault line of the next decade is not who generates knowledge the fastest, but who verifies it. Christian Catalini, Forbes.com, 11 June 2026 Southern California is home to two major fault lines, the San Andreas and San Jacinto, where large tectonic plates grind past each other, occasionally triggering violent earthquakes. Victor Tangermann, Futurism, 10 June 2026 See All Example Sentences for fault line

Word History

First Known Use

1869, in the meaning defined above

Time Traveler
The first known use of fault line was in 1869

Browse Nearby Words

Cite this Entry

“Fault line.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/fault%20line. Accessed 17 Jun. 2026.

Love words? Need even more definitions?

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

More from Merriam-Webster