Added 10 October 2026 brythonic noun Categories: LanguageObscure Words noun ! Definition from WordNet 3.1, Princeton University. More about brythonic at Wordnik → Where our words come from → A southern group of Celtic languages. Related Words: brittaniccornishcymraeggaulishhiberno-celticarmoricgaelicproto-celticcymrophonegoidel Back to today's word