Re-activation is a term commonly used in marketing to signify the process of reviving inactive customers or clients. However, there are several other synonyms that can be used to describe the same process. For instance, the term "resuscitation" can be used to describe the act of revitalizing something that has become inactive. Another synonym is "renewal," which implies the restoration of something that has expired or lapsed. Additionally, the term "reinstatement" can be used to describe the action of restoring something to its previous state or position. Whether using re-activation, resuscitation, renewal, or reinstatement, businesses can benefit from these concepts to breathe fresh life into their customer base.