multidialectal

adjective
mul·​ti·​di·​a·​lec·​tal | \ ˌməl-tē-ˌdī-ə-ˈlek-tᵊl How to pronounce multidialectal (audio) , -ˌtī-\

Definition of multidialectal

: using or able to use more than one dialect of the same language We are all multidialectal, all of the time, mastering levels of formality, adjusting content to context in speech as well as writing.— Dennis Baron

First Known Use of multidialectal

1959, in the meaning defined above

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