Scantlings are small pieces of timber or wood used in construction. Alternatives for the word include dimensional lumber, square timber, or planks. Another term that can be used is beam, which refers to a larger piece of timber. Other synonyms include slats, joists, rails, and studs. In the nautical industry, scantlings refer to specific measurements and requirements for shipbuilding materials. In this context, similar terms include spars, masts, and rigging. Overall, there are a variety of synonyms for the word scantlings depending on the context and specific industry.