The word rimpled refers to something that has wrinkles or creases on its surface. There are several synonyms for this word that can be used depending on the context. One option is the word creased, which refers specifically to a fold or line that has been formed in a material. Another possibility is the word crinkled, which suggests a fine and irregular pattern of small wrinkles. Wavy is another word that can be used to describe an irregular or undulating pattern on a surface. Finally, the word furrowed can also be used to describe something that is heavily wrinkled or lined, especially if those lines are deep and well-defined.