A dry suit is a waterproof garment that keeps the wearer completely insulated and dry in wet conditions. There are several other names for a dry suit such as immersion suit, drysuit, and scuba suit. Immersion suit is a type of dry suit that is designed to help people survive in cold water if they are exposed to it unexpectedly. Drysuit is a more general term used for any type of waterproof garment that can be worn beneath or over normal clothing. Scuba suit is a specific type of dry suit that is designed for scuba divers and protects them from the elements while diving. Overall, these synonyms all refer to a durable, protective garment that keeps people dry and comfortable in wet environments.