出典:Wiktionary
出典:『Wiktionary』 (2026/07/08 19:21 UTC 版)
From cāssus with regular degemination after a long vowel, for cadō (“to fall, happen”) + -tus (“action noun suffix”), from Proto-Italic *kadō, Proto-Indo-European *ḱh₂d- (“to fall”). The grammatical sense is a semantic loan from Ancient Greek πτῶσις (ptôsis) (cf. also calqued Old Church Slavonic падежь (padežĭ), whence Russian паде́ж (padéž)).
cāsus m (genitive cāsūs); fourth declension
Fourth-declension noun.
| singular | plural | |
|---|---|---|
| nominative | cāsus | cāsūs |
| genitive | cāsūs | cāsuum |
| dative | cāsuī | cāsibus |
| accusative | cāsum | cāsūs |
| ablative | cāsū | cāsibus |
| vocative | cāsus | cāsūs |