Most nival is a term used to describe things that are the most snow-covered or snowy. It can be used to describe mountains, valleys, landscapes, or any other geographical feature that has a lot of snow on it. Synonyms for most nival include snowiest, most snowy, most blizzard-prone, most frigid, and most wintry. Other similar terms that can be used are most glaciated, most snowy-capped, and most snow-laden. The term most nival is often used by weather forecasters and meteorologists to describe areas that are experiencing particularly harsh winter weather, such as heavy snowfall and sub-zero temperatures.