The crossword solution for the term THEY MIGHT BE FALSE is TEETH. TEETH are a set of hard, calcified structures found in the jaws of many vertebrates that are used for catching and masticating food. They are also used for defense, as they can be used to bite and ward off predators. TEETH can also be false, meaning they are artificial replacements for missing TEETH. False TEETH are typically made from materials such as porcelain or acrylic resin.