The Sonsorol Alphabet

"Sonsorol" and "Sonsorolese" are two names for the same language ^[1] — both refer to the Micronesian language spoken on Sonsorol Island and Pulo Ana in the Southwest Islands of Palau. "Sonsorolese" is the formal linguistic name used by language scholars and cataloguing systems like the ISO 639-3 standard (code: sov), while "Sonsorol" is the community's own name for their language, derived directly from their island name.

This is a common pattern in language naming — many small Pacific and Indonesian languages are known by both a community self-name and a formal linguistic name given by outside scholars. The community members themselves typically use "Sonsorol" when referring to their language, while academic grammars and dictionaries use "Sonsorolese". Both names refer to the same language with the same alphabet and phonological system.

Sonsorol Island is one of the Southwest Islands of Palau ^[1], located approximately 600 kilometres southwest of Koror, Palau's main commercial city. The Southwest Islands form a chain of remote atolls and islands that include Sonsorol, Pulo Ana, Merir, and Helen Island (where Tobian is spoken). These islands are some of the most geographically isolated inhabited places in the western Pacific Ocean.

Despite their remoteness, the Southwest Islands have been politically part of Palau since the Trust Territory of the Pacific Islands era, and subsequently as part of the independent Republic of Palau since 1994. Travel between Sonsorol and Koror is infrequent, and many community members have permanently relocated to Koror for access to education, healthcare, and employment — a pattern that significantly affects language maintenance for Sonsorol.

Sonsorol belongs to the Micronesian branch of Austronesian ^[2] — the subgroup of Austronesian associated with the islands of Micronesia including the Caroline Islands, Marshall Islands, Kiribati, and Nauru. Micronesian languages are characterised by small consonant inventories (typically only voiceless stops), five-vowel systems, and a shared grammatical heritage from Proto-Micronesian.

Sonsorol's closest relative is Tobian, spoken on Helen Island in the same Southwest Islands group, with which it forms the Sonsorol-Tobian subgroup. More distant relatives include Chuukese, Pohnpeian, Carolinian, Kosraean, Marshallese, and Gilbertese. It is important to note that Sonsorol is not closely related to Palauan — the official language of Palau — which belongs to a separate non-Micronesian branch of Austronesian.

Approximately 800 people ^[1] speak Sonsorol, making it one of the smallest language communities in the Pacific and among the world's most endangered languages. The speaker community is split between those still living on Sonsorol Island and Pulo Ana, and a larger diaspora living primarily in Koror, Palau's main city. Speaker estimates vary because many community members have varying levels of fluency, particularly younger generations raised in Koror.

The small speaker base means that Sonsorol has very limited written resources — there are few books, educational materials, or media in the language. English and Palauan are the languages of education and government throughout Palau, meaning that Sonsorol-speaking children attend school entirely in Palauan or English. Without active intergenerational transmission in the home, the language faces serious risk of disappearing within a few generations.

Preservation efforts for Sonsorol include linguistic documentation ^[2] by academic linguists who have produced grammatical descriptions, wordlists, and text collections. These materials are archived and made available for future reference, ensuring that knowledge of the language's structure and vocabulary is not entirely lost even if active transmission declines. SIL International has also contributed to Sonsorolese documentation as part of its broader Pacific language work.

At the community level, Sonsorol Island community associations in Koror work to maintain cultural connections, including traditional navigation knowledge, dance, and oral history. However, formal language revitalisation programmes — such as language nests, school programmes, or community language classes — remain limited due to the very small community size and lack of dedicated resources. The Palauan government's recognition of Southwest Island languages as part of Palau's cultural heritage is an important step, but practical support for Sonsorol specifically remains a challenge.