From *sъmьrtьnъ + *-ostь.
*sъmьrtьnostь f
singular | dual | plural | |
---|---|---|---|
nominative | *sъmьrtьnostь | *sъmьrtьnosti | *sъmьrtьnosti |
genitive | *sъmьrtьnosti | *sъmьrtьnostьju, *sъmьrtьnosťu* | *sъmьrtьnostьjь, *sъmьrtьnosti* |
dative | *sъmьrtьnosti | *sъmьrtьnostьma | *sъmьrtьnostьmъ |
accusative | *sъmьrtьnostь | *sъmьrtьnosti | *sъmьrtьnosti |
instrumental | *sъmьrtьnostьjǫ, *sъmьrtьnosťǫ* | *sъmьrtьnostьma | *sъmьrtьnostьmi |
locative | *sъmьrtьnosti | *sъmьrtьnostьju, *sъmьrtьnosťu* | *sъmьrtьnostьxъ |
vocative | *sъmьrtьnosti | *sъmьrtьnosti | *sъmьrtьnosti |
* 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).