civil war

noun

plural civil wars
Synonyms of civil warnext
: a war between opposing groups of citizens of the same country
a country on the brink of (a) civil war
often used in the capitalized names of specific wars
the Spanish Civil War
(American/U.S.) Civil War monuments

Note: The American Civil War, fought 1861–1865 between the United States and 11 southern states that had seceded from it, is also commonly known as the U.S. Civil War, or especially in the U.S. as the War Between the States or simply the Civil War.

Examples of civil war in a Sentence

a region that has had many civil wars The country is on the brink of civil war.
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 late Pope Francis organized a similar vigil in 2013 for Syria – to rally against the civil war and reject military intervention – which was attended by around 100,000 people. Billy Stockwell, CNN Money, 5 Apr. 2026 The most controversial and debated article on Mint Press News is about the use of chemical agents in the Syrian civil war. Literary Hub, 3 Apr. 2026 Sectarian tensions are a sensitive issue in Lebanon because the country fought a 15-year civil war ending in 1990 that largely broke down along sectarian lines. ABC News, 2 Apr. 2026 Syria policy and sanctions questions The report also examines Turkey’s role in Syria, where the country backed opposition forces during the civil war, supporting a range of armed factions, including groups that later formed the Syrian National Army. Efrat Lachter, FOXNews.com, 1 Apr. 2026 See All Example Sentences for civil war

Word History

First Known Use

circa 1533, in the meaning defined above

Time Traveler
The first known use of civil war was circa 1533

Browse Nearby Words

Cite this Entry

“Civil war.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/civil%20war. Accessed 6 Apr. 2026.

Kids Definition

civil war

noun
: a war between opposing groups of citizens of the same country or nation
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