"Sweep up" is a phrase used to describe the process of gathering and collecting dust, debris, or other unwanted materials from floors, surfaces, or areas. There are a variety of synonyms that can be used to describe this action. Some examples include: clean up, pick up, gather, collect, tidy up, clear away, remove, and dispose of. Each of these words indicates the act of taking care of messes and organizing spaces, but with slightly different connotations. Choosing the appropriate synonym for "sweep up" can help to convey the specific task being undertaken and provide more clarity and precision in communication.