"Rivergoing" is a word commonly used to describe vessels or transportation mediums that travel on rivers. However, there are numerous synonyms for this term, including "riverine," "fluvial," and "riparian." "Riverine" refers to the area or ecosystem near a river, while "fluvial" is a scientific term used to describe geological activity that occurs within a river system. "Riparian" is another term used to describe the vegetation and ecology that exists in or around a river. Other synonyms for rivergoing might include "streamlined," "watery," "aqua-bound," or "waterborne." Ultimately, the choice of synonym depends on the context in which the word is used.