Sean O'Casey, the Irish playwright and writer, is well-known for his contributions to Irish literary culture during the early 20th century. Some synonyms for Sean O'Casey might include "Irish playwright," "Dublin writer," "dramatist," "author of The Plough and the Stars," and "social realist." O'Casey's works often explored the tumultuous events of Irish history, including the Easter Rising and the Irish Civil War. His unique voice and keen observations of Irish society have made him a cherished figure in Irish literature. Despite facing censorship and controversy during his lifetime, O'Casey's legacy continues to inspire writers and readers alike.