"Like the devil" is an idiomatic expression implying something happening with tremendous intensity or speed, similar to Satan's notorious energy. There are several synonyms one can use to describe such situations, including "like lightning," "like a bat out of hell," "at breakneck speed," or "like wildfire." These phrases can be used in a variety of contexts, from describing a fast-moving car to a hectic workplace. It's always a good idea to vary your vocabulary and choose the right word or phrase to convey your thoughts accurately, especially in creative writing or journalism. So next time, instead of using "like the devil," try using one of these other options to add more flavor to your sentences.