"Serbo-" is a prefix used to denote something related to Serbia, or the Serbian people and culture. However, there are various other terms that can be used as synonyms for "Serbo-". For instance, "Serbian" can be used interchangeably with "Serbo-", as it refers to the same culture and people. Other synonyms for "Serbo-" can include "Slavic", "Balkan" or "Yugoslavian". These are broader terms that encompass other nations and cultures, but still share similarities with Serbia. Ultimately, the use of these synonyms will depend on the context and the writer's personal preference.