Antonyms for "re-activated" include "deactivated," "unplugged," and "disconnected." The opposite of being activated again is to be deactivated, or switched off. This could be applicable in various situations, such as an electronic device being turned off after being on for some time or a person losing interest in a project and abandoning it. Additionally, the word "unplugged" can be used to describe the removal of a device from a power source, such as unplugging a charger from a phone. Similarly, "disconnected" refers to being separated or isolated from something or someone, like turning off a phone's cellular data or disconnecting a computer from the internet.