まみれ is used to express that something is covered or stained with a particular substance, usually in an undesirable or messy way. It attaches directly to the noun that represents the substance, and the resulting phrase modifies the subject or object. For example, 泥まみれ means 'covered in mud'. The nuance is often negative, implying dirtiness or unpleasantness, but it can also describe a state of being thoroughly covered, like sweat after hard work. It's commonly used in both spoken and written Japanese, though more frequent in narratives or descriptions. When using まみれ, the substance is typically something that clings, such as mud, blood, dust, paint, etc. It's not used for abstract things like 'covered in glory'.