Unloader is a term used to describe a person or machine that helps remove or unload something. However, there are several synonyms for the word unloader that can be used depending on the context of the situation. For instance, a conveyor belt or a chute can also be used to unload goods, making them synonyms for the word unloader. A dockworker or a stevedore is also a synonym since they also help with loading and unloading ships. Other synonyms for unloader include discharger, excavator, handler, lifter, and unburdener. So, depending on the situation, there are various words you can use instead of unloader.