The term "corn-fed" refers to animals that have been raised on a diet primarily composed of corn, which results in an increased fat content in the meat. Some antonyms for corn-fed could include grass-fed, pasture-raised, or free-range. Grass-fed animals consume a diet based on natural grasses, which results in lower fat content and a different flavor profile. Pasture-raised animals are allowed to graze freely in open spaces with a varied diet that may include grasses, insects, and other natural food sources. Free-range animals are allowed to roam free in open spaces and consume a diet that is more varied and natural than corn-fed animals.