Akanye
Akanye or akanje (Belarusian: аканне, Russian: а́канье, Russian pronunciation: [ˈakənʲjɪ]), literally "a-ing", is a sound change in Slavic languages in which the phonemes /o/ or /e/ are realized as more or less close to [a]. It is a case of vowel reduction.
The most familiar example is probably Russian akanye (pronounced but not represented orthographically in the standard language). Akanye also occurs in:
- Standard Belarusian (represented orthographically)
 - Northern (Polissian and Slobozhan) Ukrainian dialects
 - Slovene dialects (e.g., Lower Carniolan dialects),
 - Some subgroups of the Kajkavian dialect of Serbo-Croatian
 - Bulgarian dialects (e.g., the Rhodope dialects, including the Smolyan dialect).
 - Polish dialects (Podlasie, Kresy)