dialectologist

/ˌdaɪ.ə.lɛkˈtɑː.lə.dʒɪst/
noun
  1. A person who studies dialects (regional or social varieties of a language).
    • The dialectologist recorded how people in different villages pronounced the word 'car'.
    • As a dialectologist, she spent years mapping the unique phrases used in coastal communities.
    • The university hired a dialectologist to help preserve the local dialect before it disappeared.
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