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, subjoin, 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

Relations between Ukraine and Russia have been strained since Moscow annexed Crimea in 2014 and supported an armed uprising in eastern Ukraine. Peter Nicholas, WSJ, "Trump Canceling Planned Meeting With Russia’s Putin Over Ukraine Situation," 29 Nov. 2018 The showdown came amid the long-simmering conflict between the two countries, in which Russia annexed Ukraine’s Crimean Peninsula in 2014 and supported separatists in Ukraine’s east with clandestine dispatches of troops and weapons. Yuras Karmanau, The Seattle Times, "Putin derides Ukraine’s martial law as political trick," 28 Nov. 2018 Russia was expelled from what at the time was the Group of 8 in 2014 after invading Ukraine and annexing Crimea. Author: Jim Puzzanghera, Anchorage Daily News, "Trump leaves G-7 summit early after rattling allies with trade threats," 9 June 2018 Many moved there after Japan annexed Korea in 1910; 600,000 stayed after the end of World War II. Amanda Erickson, The Seattle Times, "Trump says no other country has birthright citizenship. He’s wrong.," 30 Oct. 2018 Early campaigns focused on a domestic audience as well as the Ukraine—particularly as Russia occupied and then annexed Crimea. Sean Gallagher, Ars Technica, "How Russia’s “influence operations” targeted the midterms (and how they still do)," 22 Oct. 2018 Relations between the two countries have been strained since 2014, when Russia annexed Crimea and separatists backed by Moscow in eastern Ukraine have fought government troops in a conflict that has killed more than 10,000 people. Washington Post, "Makeup and pig’s blood: Reporter describes his faked slaying," 2 June 2018 Russian-Ukrainian relations were plunged into crisis in 2014, when Russia annexed the Crimean Peninsula and as pro-Russian rebels seized parts of the east of Ukraine. Angela Dewan, Antonia Mortensen And Denis Lapin, CNN, "Russia, Ukraine blame each other for journalist killing," 30 May 2018 After Russia annexed Ukraine’s Crimean Peninsula in 2014, NATO allies agreed to stop cutting defense budgets, to start spending more as their economies grew and to move toward a goal of devoting 2 percent of GDP to defense within a decade. Lorne Cook, The Seattle Times, "NATO allies defend military spending amid Trump criticism," 3 July 2018

Recent Examples on the Web: Noun

Crucial to Sheba’s reign was said to to be the Kingdom’s Temple, documented to have once been her throne, internationally lauded for its majestic entrance, magnificent pillars and great annexes. Hollie Mckay, Fox News, "Archaeologists fear biblical artifacts, monuments won't survive Yemen war," 9 Aug. 2018 Court had been conducted in a former pizza restaurant until the annex was repaired. Karen Zurawski, Houston Chronicle, "Incumbent justice of the peace wins re-election in west Harris County," 23 May 2018 The bodies from Calatayud were placed in the Chapel of the Sepulcher, a small annex of concrete and marble located to the right of the altar. Matías Costa, Smithsonian, "The Battle Over the Memory of the Spanish Civil War," 28 June 2018 The latest burglary was at a Harris County courthouse annex on May 4. Samantha Ketterer, Houston Chronicle, "Deputies arrest three in ATM robbery at Harris County tax office," 22 May 2018 Every Thursday evening at 6 p.m. Thacker Mountain Radio broadcasts live from the bookstore's annex, the event hosted by the inimitable Jim Dees. Chris Offutt, Town & Country, "A Writer's Guide to Oxford, Mississippi," 22 Nov. 2013 Alpharetta police are investigating the death of an inmate at the north annex of the Fulton County jail. Steve Burns, ajc, "Alpharetta police investigating inmate’s death," 18 June 2018 The annex is attached to the state’s historic Capitol building. Adam Ashton, sacbee, "Capitol staff, get ready to move. State budget has $755 million for new offices.," 14 June 2018 His church already has started seedlings of green peppers and Swiss chard in his church’s annex. Adelle M. Banks, Houston Chronicle, "Black network’s farm-to-church movement brings fresh food to community," 29 Apr. 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

9 Dec 2018

Look-up Popularity

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

Comments on annex

What made you want to look up annex? Please tell us where you read or heard it (including the quote, if possible).


the figure or shape of a crescent moon

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