Caudal appendage, also known as the tail, is a body part of many living beings that helps in balancing, communication, and movement. Some of the antonyms for the word caudal appendage are head, anterior, front, forepart, and cranial. These words are used to describe the opposite end of the animal's body, which is the head or the front part. In some cases, animals may not have a caudal appendage or a tail, but they may possess other body parts such as wings, flippers, or fins that assist them in movement and communication. The antonyms for caudal appendage define the opposite end of the animal's body and help in better understanding the anatomical characteristics of living beings.