When it comes to synonyms for "rivered," there are a few options that come to mind. The first that may come to mind is "flanked by a river" or "bordered by a river." Both of these phrases convey the same meaning as "rivered" but with slightly different wording. Another option is "intersected by a river," which denotes that a waterway is crossing through an area. "Watered by a river" is another synonym for "rivered" that emphasizes the importance of the body of water in question, while "riverside" is a more location-specific synonym indicating that something is situated or located near a river.