Annex – Definition & Meaning

Annex is a commonly used word in the English language, but its meaning and usage can vary depending on the context. Whether you’re reading a legal document or a history book, it’s essential to understand the definition and meaning of annex. In this article, we will explore the various definitions, origins, and associations of the word annex.


The word annex can be used as a verb or a noun. As a verb, it means to add or attach something to an existing structure or document. As a noun, it refers to an addition or extension to an existing structure or document. Annex can also be used to describe the process of acquiring territory or land by a country or government.


The word annex comes from the Latin word “annexus,” which means “attached.” The word was first used in the English language in the 14th century and has been in use ever since.

Meaning in different dictionaries

According to the Oxford English Dictionary, annex means “to add, attach, or incorporate something to an existing structure or document.” Merriam-Webster defines annex as “to add to something larger or more important.” The Cambridge Dictionary defines annex as “to take control of a country, region, or territory, especially by force.”


Annex is often associated with the process of acquiring new territory or land by a country or government. This can be done through force, negotiation, or other means. Annexation has been a common practice throughout history, and many countries have used it to expand their territories.


Some synonyms of annex include add, attach, append, join, and affix.


Some antonyms of annex include detach, remove, separate, and disconnect.

The same root words

The word annex shares the same root word as “annexation,” which refers to the process of adding or acquiring new territory or land.

Example Sentences

  • The company plans to annex a new building to their existing headquarters.
  • The government announced the annexation of a neighboring country’s territory.
  • The museum’s new annex will feature modern art exhibits.
  • The contract includes an annex with additional terms and conditions.
  • The school district voted to annex a nearby town’s schools.
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