To restore to a previously operational state. (verb)
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Use "reëstablish" in a sentence
"After being reinstated, Barnett worked hard to clear his name and reestablish his reputation."
"At the end of New Moon, Chris Weitz missed a great opportunity to 'reestablish' the profound love between Edward and Bella by extending the back-from-Italy-bedroom-scene ... but he missed that opportunity."
"Meanwhile, Swiss Re said its recent progress allows it to "reestablish" medium term targets, including a return on equity of 12% over the reinsurance cycle, up from 7% in the fourth quarter."