"Iron out" is a common phrase used to describe the process of resolving conflicts or smoothing out differences in a situation. There are many synonyms for this phrase, including "smooth over," "resolve," "clarify," "settle," "fix," and "straighten out." Each of these just as adequately describes the process of clearing up misunderstandings, mitigating disputes, and ensuring harmony in interpersonal or professional relationships. Whether it's a disagreement with a colleague or friend, or trying to work out the details of a complex project, using synonyms for "iron out" helps to convey a clear and concise message, making communication easier and more effective.