v.1. To stick or cling to the surface of something: After the fire, soot and smoke adhered to the walls.
2. To follow some law, set of beliefs, or course of action: Let's adhere to the plan we already discussed. You need to adhere to our rules very strictly if you want to join our organization.
3. To believe that some idea is true or right: Although some people are skeptical, most people adhere to the notion that our changing climate is a serious problem.