Rimeless is a word that refers to something that is devoid of frost or ice, and can be used to describe a range of environmental conditions. Some other synonyms for rimeless might include: unfrozen, unicycled, unglazed, defrosted, thawed or melted. These words all suggest a sense of warmth and transformation, and are often used to describe the changing seasons or the melting of snow and ice. Whether you're writing about a winter landscape, a thawing river or a thawing relationship, using synonyms for rimeless can help you to create a vivid and evocative picture of your subject matter.