Adverb
dialectally (comparative more dialectally, superlative most dialectally)
In a dialectal way.
A serious problem when creating these writing systems was that the languages differed dialectally greatly from each other. Source: Internet
The two words appear to be derived from the same Indo-European form *ṇ-mṛ-tós, "un-dying" citation Mallory also connects to this root an Avestan word, and notes that the root is "dialectally restricted to the IE southeast". Source: Internet
Significant parts of Moravia, usually those formerly inhabited by the German speakers, are dialectally indifferent, as they have been resettled by people from various Czech (and Slovak) regions. Source: Internet