annexe
Annexe (noun) means a separate or extra building attached to, or built alongside, a larger one. Example: “The school built a new annexe to house the science labs.”
How to use annexe
Learner’s notesIn plain EnglishAn annexe is either an extra building joined to a bigger one, or an added section tacked onto a document.
Annexe is the standard British spelling of the noun; American English writes it as annex, and the verb meaning to seize or attach is always spelled annex.
If you mean the action of taking over territory or attaching something, use the verb annex, not annexe.
Trace the full origin ↓Fill the gap
Can you complete this real example?
The school built a new _____ to house the science labs.
Etymology
Annexe came into English from French annexe, which in turn goes back to Latin annexus, meaning something joined or attached. The spelling reflects its French route into the language.