The phrase "work something out" is used when referring to finding a solution or resolving a problem. There are many synonyms that can be used in its place. These include "resolve," "settle," "solve," "figure out," "fix," "iron out," "sort out," "hammer out," "negotiate," and "come up with a solution." Each of these can be used instead of "work something out" depending on the situation and the specific action being taken to address the problem. Using synonyms is a great way to avoid repetition in language while still conveying the same message.