The phrase "most omophagous" describes a creature that regularly consumes its own kind. However, there are several other words that can be used to convey the same meaning. "Cannibalistic" is perhaps the most commonly used synonym and refers to animals that feed on their own species. Other options include "carnivorous," which describes a predator that primarily eats meat, or "predatory," which suggests a creature that preys on other animals. "Autophagic" is another term that can be used to describe self-cannibalism, while "anthropophagic" specifically denotes consumption of human flesh. Ultimately, the choice of synonym will depend on the context and tone of the discussion.