British UK /ˈbɹɪtɪʃ/US [ˈbɹɪɾɪʃ]adjective 7noun 4forms 3 adjective7 •from the United Kingdom, or connected with that country and its people •Of Britain. •Of British English. •(informal, nonstandard) Of England; English. •Of the Commonwealth of Nations, or the British Empire. •Of the British Isles. •(historical) Of the ancient inhabitants of the southern part of Britain; Brythonic. noun[plural only]4 •The residents or inhabitants of Great Britain. •The citizens or inhabitants of the United Kingdom. •The earlier inhabitants of southern Britain, prior to the Anglo-Saxon invasion and subsequent migrations. •(no longer used) Synonym of Welsh: the Welsh people. formsmore British · Britishest · most British