Northern Khmer dialect

Northern Khmer (พซาคแมร; Khmer: ខ្មែរខាងជើង), also called Surin Khmer (Khmer: ខ្មែរសុរិន្ទ), is the dialect of the Khmer language spoken by approximately 1.4 million Khmers native to the Thai provinces of Surin, Sisaket, Buriram and Roi Et as well as those that have migrated from this region into Cambodia.

Northern Khmer differs from the standard language, based on a dialect of Central Khmer, in the number and variety of vowel phonemes, consonantal distribution, lexicon, grammar, and, most notably, pronunciation of syllable-final /r/, giving Northern Khmer a distinct accent easily recognizable by speakers of other dialects. Some speakers of Northern Khmer may understand other varieties of Khmer but speakers of standard Khmer who have not been exposed to Northern Khmer often have trouble understanding Northern Khmer at first. The two varieties are 80–85% cognate on a basic 270-word list. These facts have led some linguists to advocate considering Northern Khmer a separate, but closely related language.