Phonological and morphological characteristics
* The reflex of Old Church Slavonic ѣ in a stressed syllable is я () before a hard syllable (бѣлъ > ) and broad е () before a soft syllable (бѣли > ). In an unstressed syllable, the reflex is, however, only я (). * Complete loss of x in all positions. It is replaced by either f or v: ''фулера'' vs. formal Bulgarian ''холера'' (cholera) * The masculine definite article is о (stressed) and у (unstressed) instead of formal Bulgarian –ът/ъ (''гърбо̀, сто̀лу'' instead of ''гърбъ̀т, сто̀лът'') * Preserved traces of Old Bulgarian ы : ''сын'' vs. formal Bulgarian ''син'' (son). This makes the Shumen dialect extremely archaic as is considered to be the original pronunciation of Old Church Slavonic ы * Transition of a into e after a soft (palatal) consonant and before a soft syllable: ''шапка-шепки'' vs. Standard Bulgarian ''шапка-шапки'' (hat-hats) * Large number of o reflexes of Old Church Slavonic ъ in a suffix position (as in the Southwestern Bulgarian dialects) and subsequent reduction of o into у: ''напредук'' vs. Standard Bulgarian ''напредък'' (progress) * Labialisation of и into ʲу: ''пипер'' is /pʲupɛr/ (as if ''пюпер'') vs. Standard Bulgarian /pipɛr/ (pepper) * Elision of syllables, vowels and consonants, usually in frequently used words: ''рапта'' vs. Standard Bulgarian ''работа'' (work) * A large number of lexical peculiarities, e.g. ''жерка'' vs. common Bulgarian ''воденица'' (watermill) * The modern Bulgarian vowel ъ (from both yers and *ǫ) is pronounced as a close /ɯ/, rather than close-mid /ɤ/ For other phonological and morphological characteristics that are typical for all Moesian dialects, cf. article.Sources
Стойков, Стойко: Българска диалектология, Акад. изд. "Проф. Марин Дринов", 2006, с. 105-1