The phrase "other sides" can have a number of synonyms depending on the context. In some cases, "opposing sides" or "contrasting sides" may be more appropriate, especially when discussing conflicting viewpoints or issues. Alternatively, "alternative perspectives" or "different angles" could be used when considering a range of viewpoints that may not necessarily be in conflict. When referring to physical objects, "alternate faces" or "different aspects" may be more relevant. Ultimately, the choice of synonym will depend on the specific usage and intended meaning of the phrase "other sides".