Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun annex

1 sense of annex

Sense 1
annex, annexe, extension, wing -- (an addition that extends a main building)
       => addition, add-on, improver -- (a component that is added to something to improve it; "the addition of a bathroom was a major improvement"; "the addition of cinnamon improved the flavor")

Synonyms/Hypernyms (Ordered by Estimated Frequency) of verb annex

2 senses of annex

Sense 1
annex -- (take (territory) as if by conquest; "Hitler annexed Lithuania")
       => assume, usurp, seize, take over, arrogate -- (seize and take control without authority and possibly with force; take as one's right or possession; "He assumed to himself the right to fill all positions in the town"; "he usurped my rights"; "She seized control of the throne after her husband died")

Sense 2
annex -- (attach to)
       => append, add on, supplement, affix -- (add to the very end; "He appended a glossary to his novel where he used an invented language")