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Use "re-activate" in a sentence
"To re-activate the Voice Changer feature, slide the switch to one of the 3 settings before first playing with the helmet."
"I'll have to fool around with the command line options as well to see if it can turn OFF my monitor after a certain amount of time rather than re-activate the screensaver."
"Given the Monster. com decision to wait for the users to discover the news of the security incident for themselves, the reasonable and responsible approach should be taken to deactivate these accounts while at the same time providing these users a means of contacting Monster. com by telephone to verify their identity to re-activate their accounts."