epochal

adjective

ep·​och·​al ˈe-pə-kəl How to pronounce epochal (audio)
ˈe-ˌpä-kəl
1
: of or relating to an epoch
2
: uniquely or highly significant : momentous
during his three epochal years in the assemblyC. G. Bowers
also : unparalleled
epochal stupidity
epochally adverb

Examples of epochal 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 cultural, social, political, and technological shifts in this century could be epochal: manufacturing may or may not return to the United States; A.I. may or may not facilitate job loss on a vast scale—or, as some insist, an idyllic state of abundance. Anna Wiener, The New Yorker, 27 Jan. 2025 And yet, Rich comments how Hubble's epochal discovery was actually relatively recent. Keith Cooper, Space.com, 17 Jan. 2025 And after the attack on Pearl Harbor, President Franklin Roosevelt raised 12 million troops to respond to Japanese aggression and wage an epochal war against Nazi Germany. Joseph F. Dunford, Foreign Affairs, 5 Jan. 2023 In his essay, Adam Roberts makes the case for this epochal view by citing the durability of the conflict between the two great powers over more than four decades. Lawrence D. Freedman, Foreign Affairs, 1 Mar. 2010 See all Example Sentences for epochal 

Word History

First Known Use

1685, in the meaning defined at sense 1

Time Traveler
The first known use of epochal was in 1685

Dictionary Entries Near epochal

Cite this Entry

“Epochal.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/epochal. Accessed 2 Feb. 2025.

More from Merriam-Webster on epochal

Last Updated: - Updated example sentences
Love words? Need even more definitions?

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