Viscous and sticky are terms used to describe a substance that has a thick, gooey consistency. GLUEY is another word for this type of substance, which is often used as an adhesive. Viscous and sticky substances are usually composed of polymers, which are long chains of molecules that form a gel-like material. These substances can be used in a variety of applications, such as sealing cracks, adhering objects together, and providing a protective coating.