Sistering is a common term used in construction, but there are a variety of synonyms that can also be used. Alternatives include strengthening, supporting, reinforcing, bolstering, and bracing. All of these words convey the idea of adding additional structural support to an existing structure. They can be applied to a variety of building materials and structures, including wooden beams, walls, and even concrete foundations. By using these synonyms, you can add some variety to your communication and enhance your writing or speech. Whether you're a construction worker or simply interested in building and design, knowing these synonyms can help you communicate more effectively.