出典:Wiktionary
Through Polish, Serbo-Croatian or Hungarian according to the author, all three coming through Ukrainian from Old East Slavic козакъ (kozakŭ), itself from Old Turkic (qazǧag, “profiteer”).
Cosacus m (genitive Cosacī, feminine Cosaca); second declension
First/second-declension adjective.
| Number | Singular | Plural | |||
|---|---|---|---|---|---|
| Case / Gender | Masculine | Feminine | Masculine | Feminine | |
| Nominative | Cosacus | Cosaca | Cosacī | Cosacae | |
| Genitive | Cosacī | Cosacae | Cosacōrum | Cosacārum | |
| Dative | Cosacō | Cosacīs | Cosacīs | ||
| Accusative | Cosacum | Cosacam | Cosacōs | Cosacās | |
| Ablative | Cosacō | Cosacā | Cosacīs | Cosacīs | |
| Vocative | Cosace | Cosaca | Cosacī | Cosacae | |