A slick website is a term used to describe a visually appealing and professional-looking website that has been designed with an emphasis on style, visual impact, and user experience. The design of such a site is clean, modern, and often features high-quality graphics, smooth animations, and intuitive navigation. A slick website may also be one that loads quickly and adapts well to different screen sizes or devices. Overall, the phrase "slick website" refers to a site that makes a good first impression with its visual design and user-friendliness.