"Hung in there" is a common phrase often used to encourage someone to keep trying and not give up. There are several synonyms that can be used to convey this sentiment, such as persevered, persisted, endured, and soldiered on. Other related phrases include staying the course, sticking with it, and not throwing in the towel. Regardless of the wording used, the underlying message is one of resilience and determination. Encouraging someone to "hang in there" or finding a suitable synonym can be an effective way to motivate them to keep striving towards their goals, even in the face of adversity.