Jeju (Jeju: ; Jeju RR: , or , or ), often called Jejueo or Jejuan in English-language scholarship, is a Koreanic language originally from Jeju Province, South Korea. It is not mutually intelligible with mainland Korean dialects. While it was historically considered a divergent Jeju dialect of the Korean language, it is increasingly referred to as a separate language in its own right. It is declining in usage and was classified by UNESCO in 2010 as critically endangered, the highest level of language endangerment possible. Revitalization efforts are ongoing.
The consonants of Jeju are similar to those of the Seoul dialect of Korean, but Jeju has a larger and more conservative vowel inventory. Jeju is a head-final, agglutinative, suffixing language, like Korean. Nouns are followed by particles that may function as case markers. Verbs inflect for tense, aspect, mood, evidentiality, relative social status, formality, and other grammatical information. Korean and Jeju differ significantly in their verbal paradigms. For instance, the continuative aspect marker of Jeju and the mood or aspect distinction of many Jeju connective suffixes are absent in Korean. Most of the Jeju lexicon is Koreanic, and the language preserves many Middle Korean features and words now lost in Standard Korean. Jeju may also have a Peninsular Japonic substratum, but this argument has been disputed.
Jeju was already divergent from Seoul Korean by the fifteenth century and unintelligible to mainland Korean visitors by the sixteenth century. The language was severely undermined by the aftermath of the Jeju uprising of 1948, the Korean War, and the modernization of South Korea. Many fluent speakers remaining in Jeju Island are now over seventy years old. Most people in Jeju Island now speak a variety of Korean with a Jeju substratum. The language may be somewhat more vigorous in a diaspora community in Osaka, Japan, as many Jeju people migrated to Osaka in the 1920s, but even there, younger members of the community tend to speak Japanese.
Nomenclature and relationship to Korean
Various terms in both Korean and English exist for the Jeju language, which also vary depending on whether it is considered a separate language or a dialect of Korean by the speaker.
Among native speakers, the term "Jeju speech" () is most commonly used. In English-language scholarship, it is often called Jejueo or Jejuan.
Language or dialect distinction Jeju is closely related to Korean. It was traditionally considered an especially divergent dialect of Korean, and is still referred to as such by the National Institute of Korean Language and the South Korean Ministry of Education.
Until the 2000s, South Korean academia preferred the term "Jeju dialect" (). While the term "Jeju language" () was first used in 1947, it was not until the mid-1990s that the term gained traction. The majority of South Korean academic publications switched to using "Jeju language" by the early 2010s. Since somewhat earlier, "Jeju language" has also been the term preferred in local law, such as the 2007 Language Act for the Preservation and Promotion of the Jeju Language, and by non-governmental organizations working to preserve the language. The only English-language monograph on Jeju, published in 2019, consistently refers to it as a language as well.
Mutual intelligibility with modern South Korean Korean Jeju is not mutually intelligible with even the southernmost dialects of South Korea. In a 2014 survey measuring intelligibility, Korean speakers from three different dialect zones (Seoul, Busan, and Yeosu) were exposed to one minute of spoken Jeju, with a control group of native Jeju speakers. On average, South Korean native speakers from all three dialect zones answered less than 10% of the basic comprehension questions correctly, while native Jeju speakers answered over 89% of the questions correctly. These results are comparable to the results of an intelligibility test of Norwegian for native Dutch speakers. Diaspora Jeju speakers living in Japan have also reported that they find it difficult to understand South Korean news media, and resort to Japanese subtitles when watching South Korean TV shows.
Geographic distribution
Jeju was traditionally spoken throughout Jeju Province except in the Chuja Islands, halfway between Jeju Island and mainland Korea, where a variety of Southwestern Korean is found. The language is also used by some of the first- and second-generation members of the Zainichi Korean community in Ikuno-ku, Osaka, Japan.
Compared to mainland Korean dialect groups, there is little internal variation within Jeju. A distinction between a northern and southern dialect with a geographic divide at Hallasan is sometimes posited, but an eastern-western dialectal divide cutting through Jeju City and Seogwipo may better explain the few dialectal differences that do exist. A 2010 survey of regional variation in 305 word sets suggests that the north–south divide and the east–west divide coexist, resulting in four distinct dialect groups.
History
Pre-modern history The Koreanic languages are likely not native to Jeju Island; it has been proposed that the family has its roots in Manchuria, a historical region in northeastern Asia. It is thought that Koreanic speakers migrated from southern Manchuria between the third and eighth centuries CE. Linguist Alexander Vovin suggests that the ancient kingdom of Tamna, which ruled the island until the twelfth century, may have spoken a Japonic language that left a substrate influence on Jeju. When exactly this putative Japonic language may have been replaced by the Koreanic ancestor of Jeju remains unclear.
During the late thirteenth century, Jeju Island came under direct Yuan administration, which lead to significant migration of Mongol soldiers to the island. Acting as a superstratum, their language contributed to the change of the local language. Yang Changyong, a linguist, speculates that Mongol influence played a significant role in the formation of Jejueo as a distinct language independent from standard Korean.
By the fifteenth century, when the invention of Hangul greatly improved the understanding of Korean phonology, Seoul Korean and Jeju were already divergent; the Seoul prestige dialect of fifteenth-century Middle Korean disallowed the diphthong , which Jeju allows. Sixteenth- and seventeenth-century references to the language of Jeju by mainland Korean literati state that it was already unintelligible to mainland Koreans. Kim Sanghŏn (1570–1652), who from 1601 to 1602 served as the island's pacification commissioner, gives six words in the "provincial language" with clear cognates in modern Jeju and also writes:
"The exiled man Shin Jangnyeong was originally a government interpreter. He said, 'The language of this island is most like Chinese, and the sounds they make while driving cattle and horses are yet more impossible to tell apart. Is this because the climate is not far from that of China, or because the Yuan dynasty once ruled and appointed officials here and the Chinese mingled with them?'... What is called the provincial language is but high and thin and cannot be understood."
In 1629, the Korean government banned the emigration of Jeju Islanders to the mainland, further restricting linguistic contacts between Jeju and Korean. At the same time, the island was also used throughout the Joseon era (1392–1910) as a place of exile for disgraced scholar-officials. These highly educated speakers of Seoul Korean often tutored the children of their Jeju neighbors during their exile and established a continuous and significant Seoul Korean superstratum in Jeju.
Japanese colonial period (1910–1945)
Under the Japanese colonial rule, Jejueo remained the dominating language in both public and private spheres on Jeju Island. However, with the entrance of Japanese loanwords to the lexicon, some speakers became monolingual Japanese speakers. Migration of Jeju Islanders to Japan began to skyrocket in 1911, with significant communities established, more so in cities like Osaka, becoming home to 38,000 Jeju Islanders by 1911. Despite gaining independence, citizens of Jeju and Korea still migrated to Japan, continuing to impact the linguistic landscape of Jeju Island as the younger generations within the diaspora communities only spoke Japanese, leading the decline in fluency in Jejueo.
Modern period and decline (1945–present)
Severe disruption to the Jeju language community began after the end of Japanese rule and World War II in 1945. Korea was divided between an American-backed government in the South and a Soviet-backed government in the north, which were succeeded by South Korea and North Korea correspondingly in 1948. Popular opposition to the division and many other issues led to a rebellion on Jeju island on 3 April 1948. The Syngman Rhee regime suppressed the rebellion with mass killings of civilians. As many as 60,000 Jeju Islanders, or a full fifth of the pre-rebellion population, were killed. 40,000 more fled to Japan. Out of the 400 villages of the island, only 170 remained.
The devastating impact of the massacres on the Jeju language community was exacerbated by the outbreak of the Korean War in 1950. While Jeju was never occupied by the North Korean army, nearly 150,000 Korean-speaking refugees from the mainland fleeing North Korean invasion arrived in Jeju in the first year of the war.
The above events shattered the Jeju language's former dominance on the island, and Standard Korean began to displace Jeju in the public sphere by the 1950s. The 1970s Saemaeul Undong, an ambitious rural modernization program launched by Park Chung Hee, disrupted the traditional village community where Jeju had thrived. The language came to be perceived as an incorrect dialect of Korean; students were even subject to corporal punishment if they used it in school. Standard Korean became more commonplace in private settings even outside of Jeju City. The language attitude of native Jeju speakers in this period was self-disparaging, and even Jeju people regarded the use of Jeju "with contempt". A 1981 survey of language attitudes among high school and university students natively speaking Seoul Korean, Chungcheong Korean, Southwestern Korean, Southeastern Korean, and Jeju showed that Jeju speakers were the most likely among the five groups to ascribe negative traits to their native variety.
A 1992 study of code-switching by native Jeju speakers shows that Jeju was by then in an unfavorable diglossic relationship with Korean, and was largely restricted to informal contexts even between Jeju natives. Within a primarily Jeju conversation, Standard Korean was used to emphasize the rationality or truth value of statements. Switching to Jeju in a primarily Standard Korean conversation signified that the speaker was making a subjective statement or being less serious.
+Code-switching rules in early 1990s Jeju Participants Formality Intimacy Social status Preferred variety Includes mainlander Standard Korean Only Jeju natives Formal Informal Participants are not emotionally intimate Speaker is socially inferior to addressee Speaker is socially superior to addressee Jeju / Jeju Korean Participants are emotionally intimate
The same study notes that by 1992, even this variety restricted to the informal domain was usually a Korean dialect with a Jeju substratum, rather than the traditional Jeju language: