Probably from Vulgar Latin *centus.
*cęta f
singular | dual | plural | |
---|---|---|---|
nominative | *cęta | *cę̀tě | *cę̀ty |
genitive | *cę̀ty | *cę̀tu | *cę̀tъ |
dative | *cę̀tě | *cę̀tama | *cę̀tamъ |
accusative | *cę̀tǫ | *cę̀tě | *cę̀ty |
instrumental | *cę̀tojǫ, *cę̀tǭ** | *cę̀tama | *cę̀tamī |
locative | *cę̀tě | *cę̀tu | *cę̀tasъ, *cę̀taxъ* |
vocative | *cę̀to | *cę̀tě | *cę̀ty |
* -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).