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deactivate (v.)

also de-activate, "render inactive or less active," 1904, from de- "do the opposite of" + activate. Related: Deactivated; deactivating; deactivation.

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Definitions of deactivate from WordNet

deactivate (v.)
remove from active military status or reassign;
The men were deactivated after five years of service
deactivate (v.)
make inactive;
they deactivated the file
Synonyms: inactivate
From wordnet.princeton.edu