Māori (Māori: [ˈmaːɔɾi] ; endonym: te reo Māori [tɛ ɾɛɔ ˈmaːɔɾi], 'the Māori language', also shortened to te reo) is an Eastern Polynesian language and the language of the Māori people, the indigenous population of mainland New Zealand. The southernmost member of the Austronesian language family, it is related to Cook Islands Māori, Tuamotuan, and Tahitian. The Māori Language Act 1987 gave the language recognition as one of New Zealand's official languages. There are regional dialects of the Māori language.Prior to contact with Europeans, Māori lacked a written language or script. Written Māori now uses the Latin script, which was adopted and the spelling standardised by Northern Māori in collaboration with English Protestant clergy in the 19th century.
In the second half of the 19th century, European children in rural areas spoke Māori with Māori children. It was common for prominent parents of these children, such as government officials, to use Māori in the community. Māori declined due to the increase of the European population and government-imposed educational policies; by the early 20th century its use was banned in school playgrounds and classrooms across the country. The number of speakers fell sharply after 1945, but a Māori language revival movement began in the late 20th century and slowed the decline. The Māori protest movement and the Māori renaissance of the 1970s caused greater social awareness of and support for the language.