Knurlier is a word which describes something that is full of knots or gnarled. There are several synonyms that can be used instead of knurlier. These include gnarled, twisted, rugged, contorted, distorted and knotty. Gnarled and twisted are closely related synonyms which describe something that is bent, curved, or coiled. Rugged, contorted and distorted describe something that is bent, irregular or out of shape. Knotty is another synonym which describes something that is knobbly or rough. All of these synonyms can be used to describe something which has a similar appearance to knurlier, depending on the use of the word in the sentence.