an·nex | \ə-ˈneks, ˈa-ˌneks \
annexed; annexing; annexes

Definition of annex 

(Entry 1 of 2)

transitive verb

1 : to attach as a quality, consequence, or condition Many privileges were annexed exclusively to royalty.

2 archaic : to join together materially : unite

3 : to add to something earlier, larger, or more important annexed a bibliography to the thesis

4 : to incorporate (a country or other territory) within the domain of a state The U.S. annexed Texas in 1845.

5 : to obtain or take for oneself


an·nex | \ˈa-ˌneks, -niks\

Definition of annex (Entry 2 of 2)

: something annexed as an expansion or supplement: such as

a : an added stipulation or statement : appendix approved the annex in the treaty

b : a building that is attached to or near a larger building and usually used as part of it : wing Historical photographs were on view in the library's annex.

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Other Words from annex


annexation \ˌa-ˌnek-ˈsā-shən \ noun
annexational \-shnəl, -shə-nᵊl \ adjective
annexationist \-sh(ə-)nist \ noun

Synonyms & Antonyms for annex

Synonyms: Verb

add, adjoin, append, tack (on)

Synonyms: Noun

addition, extension, penthouse

Antonyms: Verb

abate, bate, deduct, knock off, remove, subtract, take off

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Examples of annex in a Sentence


The United States annexed Texas in 1845. The government planned to annex the islands.


The addition will be used as an annex to the library. We store our old files in the annex. an annexe to the document
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Recent Examples on the Web: Verb

But within days of the Olympic closing ceremony, masked Russian soldiers moved into Ukraine’s Crimean peninsula, which Moscow eventually annexed. Sabra Ayres,, "World Cup gives Russia a global makeover, but how long will that last?," 10 July 2018 In 1874, New York City annexed West Farms; the land east of the river followed a couple of decades later. New York Times, "West Farms, the Bronx: Flora, Fauna and Renewal," 13 June 2018 The Western Sahara issue also arose in campaigning, with some voters reminded that Morocco annexed the former Spanish colony in 1975. Graham Dunbar And Rob Harris,, "Will North America get the 2026 World Cup? We’ll soon find out," 13 June 2018 A half-century after China annexed Tibet, dozens of distinct dialects with unique alphabets are on the verge of extinction. National Geographic, "The Race to Save the World's Disappearing Languages," 16 Apr. 2018 That thinking changed in 2014 when Russian President Vladimir Putin annexed Crimea, allegedly sent troops into eastern Ukraine, and began violating airspace over the Nordic and Baltic regions. Alexander Smith, NBC News, "Sweden plans to build more bunkers amid fears of Russian aggression," 6 Mar. 2018 The Village Board also annexed eight acres to accommodate a new sanitary sewer line along Fiddyment Creek to serve the area between 159th and 151st streets and Cedar and Gougar roads. Michelle Mullins, Daily Southtown, "Homer Glen OKs $2.6 million for new playground, sensory garden; work to begin soon," 13 July 2018 Aurora would soon annex what is now the city’s Far East Side in DuPage County, leaving room for physical growth. Sarah Freishtat, Aurora Beacon-News, "Aurora in 2018: With population no longer booming, city looks to downtown for future growth," 6 July 2018 Russia under President Vladimir Putin has become increasingly aggressive, annexing Crimea, deploying more sophisticated nuclear weapons and waging conventional warfare in eastern Ukraine and Syria. Terrence Dopp / Bloomberg, Time, "President Trump Calls on Pentagon to Create New Military Branch: A 'Space Force'," 18 June 2018

Recent Examples on the Web: Noun

In an effort to escape Nazi persecution, Anne Frank and her family famously spent more than two years hiding in a secret annex behind her father’s business. Brigit Katz, Smithsonian, "Anne Frank’s Family Tried to Escape to the United States, New Research Shows," 6 July 2018 The annex to Huntsville's city hall, located just a few feet south from the eight-story administration building, is expected to be demolished by the end of the year. Paul Gattis,, "Demolishing of Huntsville city hall annex set for later this year," 30 Apr. 2018 Hurricane Harvey displaced the court from its offices at the annex at 16715 Clay Road. Karen Zurawski, Houston Chronicle, "2 opponents challenge incumbent Harris County Justice of the Peace in Precinct 5, Place 2," 1 Feb. 2018 Details about why the county didn’t pay the annex electric bill last year. Kelsey Ryan, kansascity, "Record tampering, retaliation, $600 coffeepots. What's going on in Clay Co. government?," 11 June 2018 Last Friday, the Advocate's archives finally came home and are now safely back in the fireproof vault at the Advocate office, a building that once served as the county annex. Vanesa Brashier, Houston Chronicle, "Advocate, Dayton News archive project nearing completion," 21 Feb. 2018 Milwaukee County Board leaders are asking the Parks Department to rescind its decision to boot the Milwaukee Winter Farmers Market out of the greenhouse annex at the Mitchell Park Domes after a five-year run. Don Behm, Milwaukee Journal Sentinel, "Milwaukee County Board leaders urge parks officials to keep winter farmers market at Domes," 15 May 2018 Work is expected to begin at the Porter County Expo Center after the county fair is over in early August, and plans also are underway for an annex to the North County Complex in Portage. Amy Lavalley, Post-Tribune, "Porter County Commissioners: Courthouse renovation work bids in range," 8 May 2018 There were 12 international groups playing overlapping sets at the Liberty Theater and, across a frigid 42nd Street, at B.B. King Blues Club & Grill and its annex, Lucille’s. Jon Pareles, New York Times, "Review: Globalfest’s World Music for a Connected World," 15 Jan. 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'annex.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of annex


14th century, in the meaning defined at sense 1


1501, in the meaning defined above

History and Etymology for annex


Middle English, from Anglo-French annexer, from annexe attached, from Latin annexus, past participle of annectere to bind to, from ad- + nectere to bind


see annex entry 1

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Statistics for annex

Last Updated

14 Oct 2018

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Time Traveler for annex

The first known use of annex was in the 14th century

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More Definitions for annex



English Language Learners Definition of annex

 (Entry 1 of 2)

: to add (an area or region) to a country, state, etc. : to take control of (a territory or place)



English Language Learners Definition of annex (Entry 2 of 2)

: a building that is attached to or near a larger building and usually used as part of it

: a section or statement added at the end of a document


an·nex | \ə-ˈneks, ˈa-ˌneks\
annexed; annexing

Kids Definition of annex

 (Entry 1 of 2)

: to add (something) to something else usually so as to become a part of it The United States annexed Texas and it became a state.


an·nex | \ˈa-ˌneks \

Kids Definition of annex (Entry 2 of 2)

: a building or part of a building attached to or near another building and considered part of it a school annex

an·nex | \ə-ˈneks, ˈa-ˌneks \

Legal Definition of annex 

1 : attach sense 2 correspondence annexed to the petition a greenhouse annexed to the building

2 : to incorporate (as a territory) within a political domain the district annexes only shards of 24 additional parishesHays v. Louisiana, 839 F. Supp. 1188 (1993)

Other Words from annex

annexation \ˌa-nek-ˈsā-shən \ noun

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More from Merriam-Webster on annex

Thesaurus: All synonyms and antonyms for annex

Spanish Central: Translation of annex

Nglish: Translation of annex for Spanish Speakers

Britannica English: Translation of annex for Arabic Speakers

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