We don't have any synonyms for isan yet.
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Definition of isan:
(n) :
A large region in northeastern Thailand, on the Khorat Plateau.
(n) :
The ethnic Lao people who have traditionally lived in Isan.
(n) :
The language of the Isan people (between Lao and Thai, and sometimes considered a dialect of Lao, although it is written in Thai script).
(adj) :
Of, from, or pertaining to Isan, the Isan people or the Isan language.