contemporaneous

adjective

con·​tem·​po·​ra·​ne·​ous kən-ˌtem-pə-ˈrā-nē-əs How to pronounce contemporaneous (audio)
Synonyms of contemporaneous
: existing, occurring, or originating during the same time
social and political events that were contemporaneous with each other
contemporaneously adverb
contemporaneousness noun
Choose the Right Synonym for contemporaneous

contemporary, contemporaneous, coeval, synchronous, simultaneous, coincident mean existing or occurring at the same time.

contemporary is likely to apply to people and what relates to them.

Abraham Lincoln was contemporary with Charles Darwin

contemporaneous is more often applied to events than to people.

contemporaneous accounts of the kidnapping

coeval refers usually to periods, ages, eras, eons.

two stars thought to be coeval

synchronous implies exact correspondence in time and especially in periodic intervals.

synchronous timepieces

simultaneous implies correspondence in a moment of time.

the two shots were simultaneous

coincident is applied to events and may be used in order to avoid implication of causal relationship.

the end of World War II was coincident with a great vintage year

Examples of contemporaneous in a Sentence

the contemporaneous publication of the two articles contemporaneous accounts of the battle from officers on both sides
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.
There is no denying her perceptiveness, and her contemporaneous letters to her husband’s successor, Andrew Johnson—mostly attempts to secure positions for Lincoln loyalists—do not suggest a woman mentally finished off by yet more grief and loss. Thomas Mallon, New Yorker, 18 May 2026 The announcement comes a day before the start of Art-A-Whirl and Bauhaus' contemporaneous celebration, the Liquid Zoo. Anthony Bettin, CBS News, 14 May 2026 All of Amadeus’s contemporaneous stylistic and dialogue choices are a blast, but the series’ suggestion that this kind of guy is plaguing our present, too, feels the most timeless, and the most unsettling. Roxana Hadadi, Vulture, 11 May 2026 In his biography of Fuller, Nevala-Lee reconstructed the crash from contemporary newspaper accounts, official records, and Fuller’s own contemporaneous notes. Bill Gourgey, Popular Science, 29 Apr. 2026 See All Example Sentences for contemporaneous

Word History

Etymology

borrowed from Medieval Latin contemporāneus, from Latin con- con- + tempor-, tempus "time" + -āneus, compound suffix formed from -ānus -an entry 2 + -eus -eous — more at tempo

Note: The Latin word contemporāneus occurs as a noun in the sense "contemporary" in a chapter heading of Aulus Gellius's Noctes Atticae (19.14), though these headings are most likely a post-classical interpolation. The word is otherwise not attested before the early Middle Ages.

First Known Use

circa 1656, in the meaning defined above

Time Traveler
The first known use of contemporaneous was circa 1656

Browse Nearby Words

Cite this Entry

“Contemporaneous.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/contemporaneous. Accessed 29 May. 2026.

Kids Definition

contemporaneous

adjective
con·​tem·​po·​ra·​ne·​ous kən-ˌtem-pə-ˈrā-nē-əs How to pronounce contemporaneous (audio)
: existing, occurring, or beginning during the same time
contemporaneously adverb
contemporaneousness noun

More from Merriam-Webster on contemporaneous

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