A language of Thailand

Alternate Names
Cuoi, Khamen-Boran, Kui, Kui Souei, Kuoy, Kuy, Soai, Suai, Suay, Suei, Sui, Suoi
กวย‎ (Kuay), กูย‎ (Kuuy)

400,000 in Thailand (2006 Mahidol University). Few monolinguals. Total users in all countries: 456,600.


Surin, Buriram, Sisaket, and Ubon Ratchathani provinces: near Cambodian and Laos borders.

Language Status

6b (Threatened).


Chang (Suai Chang), Nheu, Kuay.

Language Use

Some young people, all adults. Positive attitudes. Have affection for Kuy and want to keep it. All also use Lao [lao], Northeastern Thai [tts]. Most also use Thai [tha]. Some also use Northern Khmer [kxm], especially older adults.

Language Development

Literacy rate in L2: 50%. Dictionary. Bible: 1992.


Khmer script [Khmr], used in Cambodia. Lao script [Laoo], used in Laos. Thai script [Thai].

Other Comments

Kuay [kdt] villages often intermingled with those of Northern Khmer [kxm] and Lao [lao]. Traditional religion, Buddhist, Christian.

Also spoken in:

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