What is another word for are smooth?
Pronunciation: [ɑː smˈuːð] (IPA) 
There are many synonyms for the phrase "are smooth," which generally means that something is without roughness, unevenness, or irregularity. Some words that can be used in place of "smooth" include "even," "level," "flat," "unblemished," "glassy," "polished," and "sleek." In certain contexts, other synonyms that can be used might include "fluid," "effortless," "seamless," or "graceful." When describing physical textures or surfaces, other descriptors could include "velvety," "silky," "satiny," "glossy," or "lustrous." The nuance of a particular word choice may depend upon the context in which it is used, and careful attention to language can help to ensure clarity and precision in communication.
