出典:Wiktionary
From Proto-Italic *jougos (“yoked team of animals”), from Proto-Indo-European *yéwgos. The plural preserves the original consonant-stem forms (from an unattested 単数形 *iūgus), while the singular was back-formed from the nominative-accusative plural as a 2nd declension noun.
iūgerum n (irregular, variously declined, genitive iūgerī); second declension, third declension
Second–third-declension hybrid noun (neuter).
| Case | Singular | Plural |
|---|---|---|
| Nominative | iūgerum | iūgera |
| Genitive | iūgerī | iūgerum |
| Dative | iūgerō | iūgeribus |
| Accusative | iūgerum | iūgera |
| Ablative | iūgerō | iūgeribus iūgerīs1 |
| Vocative | iūgerum | iūgera |
1Once only, in:
M. Terentius Varro, Res Rusticae, bk I, ch. x