Slickly is a word that is often used to describe the way something is done or the way something looks. It is frequently used in the world of business, advertising and marketing to describe a smooth and professional approach. Synonyms for slickly include smoothly, polished, suavely, sophisticatedly, and seamlessly. These words are often used interchangeably with slickly and convey a sense of professionalism and proficiency. Other synonyms for slickly include elegantly, cleanly, neatly, deftly and proficiently. Each of these words describes an action or appearance that is executed with skill and ease, and convey a sense of efficiency and competency.