Australian English (AusE, AusEng, AuE, AuEng, en-AU) is the set of varieties of the English language native to Australia. It is the country's common language and de facto national language. While Australia has no official language, English is the first language of the majority of the population, and has been entrenched as the de facto national language since the onset of British settlement, being the only language spoken in the home for 72% of Australians in 2021. It is also the main language used in compulsory education, as well as federal, state and territorial legislatures and courts.
Australian English began to diverge from British and Hiberno-English after the First Fleet established the Colony of New South Wales in 1788. Australian English arose from a dialectal melting pot created by the intermingling of early settlers who were from a variety of dialectal regions of Great Britain and Ireland, though its most significant influences were the dialects of South East England. By the 1820s, the native-born colonists' speech was recognisably distinct from speakers in Britain and Ireland.
