"cyberism" is a relatively uncommon word, and so there are not many synonyms readily available for it. However, some related terms could be used interchangeably in certain contexts. For example, "cyberspace" and "digital realm" could be used as synonyms for "cyberism" in cases where the focus is on the online world and its culture. "Technology addiction" or "tech obsession" could be used for when there is a negative connotation associated with excessive use of technology. Additionally, "information technology" or "IT" could be a synonymous phrase when referring to the technical side of cyberism. Ultimately, the choice of synonym will depend on the context and intended meaning.