Reconstruction:Proto-Balto-Slavic/sū́ˀnus

Etymology
From.

Reconstruction notes
According to the Moscow accentological school, there is often a fluctuation between fixed accent and mobile accent in names with -us. The word, now stress pattern (3), in the monuments has a mixed accent, which arose, obviously, from different case wordforms, in part of which there were conditions for Hirt’s law. As a result, the victory was won by those wordforms in which Hirt’s law was not present, thereby leveling an extremely complex accent curve and thus distributing it according to more ancient paradigms. Adjectives also seem to have a similar distribution, cf. (1) ~ (3). Also see Jay Jasanoff other explanation in “references”. However, from the point of view of the first explanation, it would be necessary to reject Jasanoff’s explanation that there is an stress pattern (1) in the Old Lithuanian. For according to Illich-Svitych’s materials there is a mixed accent, cf. gen. sg. ~ nom. sg. , instr. sg. . Apparently, this is due to the fact that Hirt’s law is postulated as a one-time law that occurred in all wordforms of the paradigm.

It is also necessary to pay attention to the different accent in the dative plural of Daukša (1599) and in the Bible  (1755).

Noun

 * 1)  son

Descendants

 * East Baltic:
 * West Baltic:
 * West Baltic:
 * West Baltic: