出典:Wiktionary
出典:『Wiktionary』 (2025/01/17 00:30 UTC 版)
Unknown. Antonym of aprīcus. Long compared with Proto-Germanic *abuhaz (“turned the wrong way, wicked”), Sanskrit अपाञ्च् (ápāñc, “located backwards, behind”), Serbo-Croatian опак, ȍpāk (“wicked, evil”), which are from Proto-Indo-European *h₂epó (“away”) and Proto-Indo-European *h₃ekʷ- (“see”); the Latin would be via metathesis from *apōcus.
De Vaan remains unconvinced and suggests Proto-Italic *op-wākos (“situated towards the empty side”), from Proto-Indo-European *h₁epi (Latin ob) and Proto-Indo-European *h₁weh₂- (“empty”) (Latin vacuus and vānus), with the same phonetic development as in oportet.
First/second-declension adjective.
| singular | plural | ||||||
|---|---|---|---|---|---|---|---|
| masculine | feminine | neuter | masculine | feminine | neuter | ||
| nominative | opācus | opāca | opācum | opācī | opācae | opāca | |
| genitive | opācī | opācae | opācī | opācōrum | opācārum | opācōrum | |
| dative | opācō | opācae | opācō | opācīs | |||
| accusative | opācum | opācam | opācum | opācōs | opācās | opāca | |
| ablative | opācō | opācā | opācō | opācīs | |||
| vocative | opāce | opāca | opācum | opācī | opācae | opāca | |
| ・opacus | |
| ・disenvelop | |
| ・Azacytidine | |
| ・Blower | |
| ・Inner Harbor | |
| ・Charta | |
| ・scratchiness | |
| ・Urso | |
| ・Gabari | |
| ・blazoner |