verb

deactivate

to deactivate, to disable

You must deactivate the alarm before entering.

You must deactivate the alarm before entering.

The soldier's key card was deactivated.

The soldier's key card was deactivated.

((sth.)) to make (sth.) inactive You must deactivate the alarm before entering.

Synonyms: disable, turn off, shut down; Antonyms: activate, enable, turn on

From the prefix 'de-' (opposite of) + 'activate'. It literally means to undo activation.

'De-' means 'undo' or 'reverse'. So, to deactivate is to reverse activation.

This page is designed for learning support. Please use it as a learning reference, not as a formal reference.