When it comes to describing a support arm, there are a number of synonyms to choose from. Depending on the context in which the term is used, alternative words could include brace, prop, strut, stay, bracket, reinforcement or mount. Each of these terms evoke an image of something that provides additional support to something else, whether that be a physical structure, piece of equipment or even a person. Ultimately, however, the most appropriate synonym will be one that accurately reflects the intended meaning of the original term in context.