There are numerous synonyms for the phrase "stylish design" that can help to describe an attractive and fashionable appearance. Some of the best synonyms to consider include "sleek," "chic," "contemporary," "modern," "elegant," "refined," "polished," "cosmopolitan," "sophisticated," "distinguished," "fashionable," and "trendy." Each of these words can be used to describe a unique feature or attribute of a stylish design, and can help to communicate a specific feel or look. Whether you're looking to describe a piece of artwork, a dress, or even a piece of furniture, choosing the right synonym can help elevate your writing and make it more impactful.