Supersmooth is a term used to describe something that is very smooth and SILKY. The term can be broken down into two words, SILKY (5 letters) and GLIB (4 letters). SILKY is an adjective used to describe something that is soft and smooth, while GLIB is an adjective used to describe someone who is fluent and persuasive in speech. Together, these two words form the term SUPERSMOOTH, which is used to describe something that is extremely smooth and SILKY.