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Definition of annex

annex

/ˈæn.ɛks/
(UK: annexe)
an · nex

Plural:annexes
•
Past Simple:annexed
•
Past Participle:annexed
•
Present Participle:annexing
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annex Lexical Profile

annex Game Scores & Validity

• noun

1

A building joined to or associated with a main building, providing additional space or accommodations.

Example

"The hospital constructed a modern annex to house its growing pediatric department."


2

An addition to a document, typically providing supplementary information.

Example

"Please refer to the technical annex at the back of the report for a full breakdown of the survey data."

Synonyms
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• verb

1

To incorporate (territory) into the domain of a city, country, or state, often by force or without permission.

Example

"The empire threatened to annex the neighboring province to gain control of its rich mineral deposits."


2

To add or attach as an extra or subordinate part, especially to a document.

Example

"The lawyer decided to annex the newly discovered emails to the court filing."

Synonyms
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Antonyms
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Word Nuance & Usage

In British English, the noun form is frequently spelled 'annexe', whereas 'annex' is exclusively used for the verb.

Word Origin & Etymology

From Late Middle English, derived from Old French 'annexer', which comes from Latin 'annectere' (to connect or bind to), combining 'ad-' (to) and 'nectere' (to tie or bind).

Cite this Entry


Wordmom. (2026). Definition of Annex. In Wordmom Dictionary. Retrieved Oct 11, 2026, from https://wordmom.com/dictionary/annex
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