Most crinkled is an adjective used to describe something that has the most wrinkles or creases. The antonyms for this word are those that describe something smooth, flat, or unwrinkled. The opposite of most crinkled can be described as straight, uncreased or unrumpled. A few synonyms are flat, even, and level. If you're looking for a word with the opposite meaning of most crinkled, then uncrinkled, unwrinkled, smooth, or plain would be appropriate. It is important to note that antonyms allow us to communicate a wide range of thoughts and ideas in both written and oral language, providing clarity and depth to our communication.