Holy terror is a term used to describe someone who is mischievous, uncontrollable, or hard to handle. However, there are many synonyms that can be used to describe this behavior. Some of the most common ones are troublemaker, imp, rascal, rogue, and devil. These words all emphasize the mischievous nature of the person in question. Other synonyms for holy terror include hellion, prankster, mischief-maker, and troublemonger. Each of these words highlights a specific aspect of the person's behavior, whether it be their tendency to cause trouble, their love of pulling pranks, or their ability to stir up drama. Overall, there are plenty of ways to describe someone who is a holy terror, and each word speaks to a unique quality.