Weatherproofing is a term commonly used to refer to the process of protecting an object from harsh weather elements. However, there are several synonyms that can be used to describe this process. One great alternative is waterproofing, which means the same thing but specifically refers to protection from water damage. Another synonym is sealing, which refers to the process of filling gaps and sealing in cracks to ensure that water, wind, and other elements can't penetrate a structure. Additionally, words like weather-resistant and weather-tight can also be used to describe the process of weatherproofing. No matter which term you choose to use, the important thing is to ensure that your objects or structures stay safe from the elements.