Mud-spattered refers to something that is coated with mud. There are several other words that can be used in place of mud-spattered such as dirt-encrusted, mud-caked, mud-covered, mud-stained, and muddy. Dirt-encrusted suggests a hardened layer of dirt on a surface, while mud-caked implies a thick layer of mud that has dried and hardened. Mud-covered denotes a surface completely covered with mud, while mud-stained implies light traces of dirt on a surface. Lastly, muddy refers to something that is very wet with mud or has a muddy texture. These synonyms can be used interchangeably depending on the context they are used in.