Synonyms of annex

annex 1 of 2

noun

ˈa-ˌneks 

as in addition

a smaller structure added to a main building

a new annex that will serve as the permanent home for the school library

Synonyms & Similar Words

• addition
• extension
• penthouse
• wing
• ell
• arm

annex

2 of 2

verb

ə-ˈneks 

as in to add

to join (something) to a mass, quantity, or number so as to bring about an overall increase

plans to annex the supply room so as to make the classroom bigger

Synonyms & Similar Words

• add
• adjoin
• append
• tack (on)
• expand
• introduce
• subjoin
• attach
• insert
• affix
• augment
• compound
• increase
• tie
• extend
• supplement
• enlarge
• inject
• tag
• complement
• infuse
• supply
• escalate
• enforce
• enhance
• graft
• reinforce
• prolong
• amplify
• multiply
• intensify
• fasten
• hitch
• swell (up)
• lengthen
• fix
• elongate
• boost
• aggrandize
• beef (up)
• interfuse
• reenforce
• heighten
• protract
• maximize
• strengthen
• raise
• magnify

Antonyms & Near Antonyms

• separate
• remove
• deduct
• subtract
• take off
• abate
• detach
• cut
• disconnect
• reduce
• knock off
• contract
• excise
• lower
• sever
• bate
• decrease
• diminish
• amputate
• lessen
• curtail
• abridge
• unfasten
• shorten
• disjoin
• cut back
• lop (off)
• abbreviate
• compress
• condense
• constrict
• retrench

Example Sentences

Recent Examples of annex

Noun

In Amsterdam, the annex is completely empty except for some material on the walls, including Anne’s pictures of movie stars and artworks. —Laurel Graeber, New York Times, 22 Jan. 2025

Scores of Rancho Bernardo residents have been making frequent treks to the U.S. Postal Service’s annex on Bernardo Center Drive to pick up their mail in recent weeks instead of just walking to their block’s cluster box. —Elizabeth Marie Himchak, San Diego Union-Tribune, 14 Jan. 2025

Verb

At that time, the Israeli defense minister threatened to annex parts of Gaza and expel its population if Hamas did not release the Israeli hostages. —Khalil Shikaki, Time, 2 Apr. 2025

Despite the company's potential mining interests, the Australian government has yet to express interest in annexing Greenland. —Madison E. Goldberg, People.com, 29 Mar. 2025