"Drops down" is a common phrase we use to describe something that moves downward suddenly. There are several alternative words we can use instead of "drops down" to make our language more colorful and descriptive. Some synonyms that best fit in this context include plummet, descend, fall, slump, dive, and sink. Each of these words has a slightly different meaning and connotation, so it's important to choose the right one depending on the context in which you're using it. For instance, "plummet" implies a rapid and steep fall, while "sink" suggests a gradual and continuous descent. By using different synonyms for "drops down," we can improve our writing and make it more interesting to read.