Stanched is a word that is commonly used in the medical field to describe controlling bleeding or preventing the flow of fluid. However, there are many synonyms that can be used in its place. Words like staunch, stonewall, halt, arrest, block, and plug can be used depending on the context. Staunch is often used to describe someone who is loyal and committed, but it can also be used to describe controlling a flow of blood or fluid. Stonewall is more commonly used to describe refusing to answer questions or provide information, but it can also be used to describe stopping a flow. Halt and arrest are both strong words used to describe stopping something completely. Block and plug are often used to describe stopping a flow or closing off a passage.