Redo is a verb that means to do again or to revise. There are many synonyms for this common word, each with their own unique nuance. For example, you could use the word repeat to suggest doing something again without changing it. Alternatively, you could use the word remodel to imply a more significant change, as if you were changing the structure of something. Other synonyms for redo include reform, renovate, rework, revise, and refresh. Depending on the context and the level of change you want to indicate, there's a variety of words you can use to convey this idea with precision.