出典:Wiktionary
出典:『Wiktionary』 (2026/05/07 13:39 UTC 版)
From 中期英語 ides, idus, from Anglo-Norman and Old French ides, from Latin īdūs, a fourth-declension plurale tantum, from the Latin practice of treating most recurring calendrical days as plurals. The Latin term is cognate with Oscan eiduis, both perhaps deriving from an unknown Etruscan term. 中期英語 and Old French also used the singular form ide.
ides (plural ides)
English use of the Roman calendrical term always employs the Romans' inclusive dating, including the ides itself when counting. Thus, the "third day before the ides of March" (a.d. iii Id. Mart.) is March 13th: two days before March 15th, not three.
English usage also often follows the Latin contraction of the phrasing, which omits the words ante diem. March 13th may appear as the "third ides of March" or the "third of the ides of March". Thus, the "second ides" (pridie idus) is the 14th day of the old long months and the 12th day of the other months; the "third ides" (tertia idus) is the day before that; the "fourth ides" is the day before that; and so on until the "eighth ides", which is preceded by the nones in every month.
From Proto-West Germanic *idisi, potentially from Proto-Indo-European *h₂idʰ-és- (“fire, flame, burning”). Cognate with Old Saxon idis and Old High German itis. According to Jacob Grimm it is also cognate with Old Norse dís ("goddess"), but this is heavily debated.
| singular | plural | |
|---|---|---|
| nominative | ides | idesa, idese |
| accusative | idese | idesa, idese |
| genitive | idese | idesa |
| dative | idese | idesum |
出典:『Wiktionary』 (2025/04/02 19:19 UTC 版)
-idēs m (genitive -idae); first declension
First-declension noun (masculine Greek-type with nominative singular in -ēs).
| singular | plural | |
|---|---|---|
| nominative | -idēs | -idae |
| genitive | -idae | -idārum |
| dative | -idae | -idīs |
| accusative | -idēn | -idās |
| ablative | -idē | -idīs |
| vocative | -idē | -idae |