The term "muckman" is fairly specific, as it refers to someone who deals with muck, typically in a agricultural or industrial setting. However, there are a few other terms that could be used to describe someone in a similar profession. One potential synonym is "waste management technician," which is a more official term for someone who deals with waste in various forms. Another option might be "sewage worker," which is someone who specifically deals with the removal and treatment of sewage. Finally, "sanitation worker" could also be used to describe someone who cleans up and manages waste in various forms.