Bulgarian UK /bʌlˈɡɛə.ɹi.ən/US /bʌlˈɡɛɹi.ən/noun 3adjective 1forms 3 noun3 •A native of Bulgaria. •The official language of Bulgaria.The big advantage of learning Russian is that, once you’re proficient, you can understand other Slav languages such as Czech, Polish or Bulgarian. — 2021 •Ellipsis of Bulgarian split squat.Yes, Bulgarians attack glutes (and this one does too!) but all the pauses and pulses in this series will also exhaust your quads. — 2020 adjective1 •Relating to Bulgaria, its people, or the Bulgarian language. formsBulgarians · more Bulgarian · most Bulgarian