dialect; regional language
Refers to a variety of a language spoken in a particular region, distinct from the standard language. Often contrasted with 共通語 (common language) or 標準語 (standard language).
He speaks a dialect called Kansai-ben.
Dialects reflect the culture of their regions.
He speaks in the Osaka dialect.
When I go back to my hometown, I end up speaking in dialect.
When I get nervous, my dialect slips out.
My grandmother's dialect is so strong that it's hard to understand her.
Among friends, we often use dialect words.
subdialect