Most bemired means to be heavily covered in mud or dirt, a term commonly used when referring to dirty or muddy conditions. Its antonyms would therefore refer to opposite or contrasting conditions associated with cleanliness or neatness. Some possible antonyms include words like pristine, polished, spotless, immaculate, tidy, well-kept, and clean. These words all imply a sense of order and cleanliness, and could be used to describe things like a clean and well-organized living space, a freshly washed car, or a neat and tidy appearance. While most bemired speaks to filth and messiness, its antonyms represent the opposite end of the spectrum, conveying an air of cleanliness, order, and sharpness.