Ultimately from Proto-Indo-European *bʰerǵʰ-, likely through *bʰérǵʰos (“hill”), whence also Proto-Germanic *bergaz. Closely related with Avestan 𐬠𐬀𐬭𐬆𐬰𐬀𐬵 (barəzah) and Old Armenian բերձ (berj).
Although Proto-Indo-European *ǵʰ is expected to yield Proto-Slavic *z, most linguists consider the word to be inherited. Vasmer suggests that there existed a variant of the root *bʰerǵʰ- with a depalatalised stem-final velar. A minority of scholars assume borrowing from either Germanic (e.g. Old High German berg) or a Venetic-Illyrian language. Per Derksen, this is possible but lacks a solid basis.
Though it is traditionally reconstructed as a hard o-stem, Pronk-Tiethoff suggests that *bergъ was probably a u-stem instead, noting its accentuation and its reflexes found in Russian, e.g. the “second locative” na beregú and the adjective formation beregovój.
singular | dual | plural | |
---|---|---|---|
nominative | *bȇrgъ | *bȇrga | *bȇrdzi |
genitive | *bȇrga | *bergù | *bẽrgъ |
dative | *bȇrgu | *bergomà | *bergòmъ |
accusative | *bȇrgъ | *bȇrga | *bȇrgy |
instrumental | *bȇrgъmь, *bȇrgomь* | *bergomà | *bergý |
locative | *bȇrdzě | *bergù | *berdzě̃xъ |
vocative | *berže | *bȇrga | *bȇrdzi |
* -ъmь in North Slavic, -omь in South Slavic.
singular | dual | plural | |
---|---|---|---|
nominative | *bȇrgъ | *bȇrgy | *bȇrgove |
genitive | *bȇrgu | *bergovù | *bergòvъ |
dative | *bȇrgovi | *bergъmà | *bȇrgъmъ |
accusative | *bȇrgъ | *bȇrgy | *bȇrgy |
instrumental | *bȇrgъmь | *bergъmà | *bergъmì |
locative | *bergú | *bergovù | *bȇrgъxъ |
vocative | *bergu | *bȇrgy | *bȇrgove |