Gressorial is an adjective that describes the ability or adaptation of an animal to walking or running on land. Some synonyms for gressorial are terrestrial, ground-dwelling, land-based, and earthbound. These words emphasize the animal's ability to move on solid ground and are often used to describe creatures like elephants, wolves, and bears. Other synonyms include cursorial, meaning adapted to running; plantigrade, meaning walking on the soles of the feet like humans and bears; and digitigrade, meaning walking on the toes like cats and dogs. These synonyms provide a more accurate description of the animal's locomotion and can help to better classify and understand them.