To remove or deny authorization to someone; to take away someone's official permission to act.
From ex- (away) + authorize (from Medieval Latin authoritas). This is an English formation combining the Latin prefix with an English verb.
While 'authorize' became common English, 'exauthorize' never quite took off, even though it's perfectly logical. We prefer 'revoke' or 'suspend' instead—language is quirky about which logical combinations it actually uses.
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