Leadless is a term that is often used to describe an object or material that is free from lead. The term is especially important in the context of construction, as lead is a toxic metal that can pose serious health risks when it is present in materials used in building projects. Synonyms for leadless include non-toxic, safe, eco-friendly, and environmentally-friendly. Other options include uncontaminated, unpolluted, and natural. It is essential to use these words carefully when describing materials and products to ensure that consumers are aware of the potential risks associated with lead exposure and that they have access to safer and healthier alternatives.