Belong to is a common phrase used to communicate ownership or membership. However, there are several other synonyms that can be used instead of belong to. These include, but are not limited to, pertain to, be a part of, owned by, be affiliated with, be associated with, be connected to and fall under. Depending on the context in which these synonyms are used, they can add variety and depth to your writing or speech. For instance, one can say that a library pertains to a larger community, or that a particular item falls under the category of antique objects. Synonyms for belong to can make your conversation more engaging and diverse.