Isolated Balkan Slavic isogloss. According to BER, formed as *drebъ (“residue of linen, wool”) + *-xa, from Proto-Indo-European *dʰrebʰ- (“to fracture”). A similar formation is observed in Proto-Slavic *rǫbaxa (“shirt”) from Proto-Slavic *rǫbъ (“edge”). Cognate with Lithuanian drabùžis (“clothes, clothing”). Possibly related to West Slavic *drabъ (“clothing”).
Alternatively, from Proto-Slavic *derti (“to tear”), cognate with Ancient Greek δέρρις (dérrhis, “skin”). The later etymology is challenged by Georgiev, since it should have given **дряха (**drjaha) in East Bulgarian.
*drebъxa f
singular | dual | plural | |
---|---|---|---|
nominative | *drebъxa | *drebъśě | *drebъxy |
genitive | *drebъxy | *drebъxu | *drebъxъ |
dative | *drebъśě | *drebъxama | *drebъxamъ |
accusative | *drebъxǫ | *drebъśě | *drebъxy |
instrumental | *drebъxojǫ, *drebъxǫ** | *drebъxama | *drebъxami |
locative | *drebъśě | *drebъxu | *drebъxasъ, *drebъxaxъ* |
vocative | *drebъxo | *drebъśě | *drebъxy |
* -asъ is the expected Balto-Slavic form but is found only in some Old Czech documents; -axъ is found everywhere else and is formed by analogy with other locative plurals in -xъ.
** The second form occurs in languages that contract early across /j/ (e.g. Czech), while the first form occurs in languages that do not (e.g. Russian).