The word "flowoff" does not exist in the English language, therefore, there are no synonyms for it. However, based on the context of the word, it could be presumed that it might have been intended as a phrase such as "flow of". Therefore, some synonyms for "flow" are: current, stream, movement, flux, surge, circulation, and run. These words suggest the movement of liquids or any other substances. Additionally, depending on the context of the sentence, words like "drainage," "discharge," "conduit," or "channel" could be used as synonyms for "flowoff".