Muddy describes something covered in or mixed with mud, that thick, wet, sticky dirt that forms when soil gets soaked with water. After playing soccer in the rain, your cleats and shin guards might be completely muddy. A hiking trail becomes muddy after a storm, making each step a careful balance between traction and slipping.

The word also means unclear or confused, like murky water you can't see through. When someone's explanation is muddy, you can't quite understand what they're trying to say. A teacher might ask you to clarify your muddy thinking in an essay, meaning your argument needs to be more precise and logical. A photograph taken through a dirty window might look muddy, with colors that appear dull and details that are hard to make out.

You can also use muddy as a verb. Heavy boots muddy a clean floor. Adding too many details can muddy an otherwise clear presentation, confusing your audience instead of helping them understand. The phrase muddy the waters means to make a situation more confusing or complicated, like when someone brings up unrelated facts during an argument just to distract from the main point.