(comparative more British, superlative most British)
- Of Britain (meaning the British Isles)
- Of the United Kingdom.
- Of the Commonwealth of Nations, or the British Empire.
- (historical) Of the ancient inhabitants of the southern part of Britain; Brythonic.
In Old English as Bryttisc (“Britons”) . The spelling with single -t- appears in the 13th century under the influence of Latin Britannia, but spelling with -tt- persists alongside -t- during the 13th to 17th centuries.
In reference to the island of Great Britain from ca. 1400 (Latin natio Anglica sive Britannica, Brittisshe occean 1398, the Britishe nacion 1548). As a noun, referring to the British people, British soldiers, etc. from ca. 1600.