This article aims to describe the degree of loss in the environmental category of the local vocabularies in the northeastern language of Thailand or Isan dialect by using the concept of language change and language loss. This research collects the data from 20 words derived from the northeastern dictionary and obtained from an interviewers who are native and expertise of Isan language and cultures. The vocabularies data will be questioned with 60 teenagers in Isan people in the northeastern region in male and female. The data obtained to analyze statistical values easily with percentage ratio and were presented the results by the descriptive analysis including the statistical tables. |