A revived language is one that, having experienced near or complete extinction as either a spoken or written language, has been intentionally revived and has regained some of its former status.
The most frequent reason for extinction is the marginalisation of local languages within a wider dominant nation state, which might at times amount to outright political oppression. This process normally works alongside economic and cultural pressures for greater centralisation and assimilation. Once a language has become marginalised in this way, it is often perceived as being "useless" by its remaining speakers, who associate it with low social status and poverty, and consequently fail to pass it on to the next generation.
The only substantial success story in the field of language revival is Hebrew; all other cases are projects of limited success.
The Ainu language of the indigenous Ainu people of northern Japan is currently moribund, identified by Japanese scholars as a "dying language" since the 1920s. A 2006 survey of the Hokkaido Ainu indicated that only 4.6% of Ainu surveyed were able to converse in or "speak a little" Ainu. As of 2001, Ainu was not taught in any elementary or secondary schools in Japan, but was offered at numerous language centres and universities in Hokkaido, as well as at Tokyo's Chiba University. An Ainu language radio station was established in Hokkaido in 2001, and manga books have been produced in the language.
The work of researcher Kayano Shigeru has been prominent in the revival of Ainu, including the recording of the Ainu oral epics known as yukar. Shigeru also began the Nibutani Ainu Language School in 1983, the first Ainu school in Japan.
Barngarla (Parnkalla, Banggarla) is an Australian Aboriginal language of the Barngarla people in Eyre Peninsula, South Australia, Australia. It is currently being revived by Ghil'ad Zuckermann (University of Adelaide) and the Barngarla community, based on 170-year-old documents.