interdialectal

/ˌɪntərdaɪəˈlɛktəl/
adjective
  1. Relating to or occurring between different dialects of a language.
    • Interdialectal borrowing happens when words from one dialect are adopted by speakers of another.
    • Linguists study interdialectal communication to understand how speakers of different dialects understand each other.
    • The interdialectal differences between Northern and Southern English can be quite noticeable.