"Brython" is a term that finds its roots in the Old Celtic language. It refers to the ancient Britons, who inhabited the island before the Roman conquest. Synonyms for "Brython" include variations that represent the same group of people. One such synonym is "Briton," which emphasizes their association with Britain. Additionally, "Welsh" can be used as a synonym as it denotes the Brythonic-speaking inhabitants of Wales. Another synonym is "Cymry" or "Cymric"; these terms highlight their connection to the Celtic heritage and language. Employing these synonyms helps to explore different aspects of the Brythonic culture and people who played an essential role in shaping the history of Britain.