opacus

== Latin == === Etymology === 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. === Pronunciation === (Classical Latin) IPA(key): [ɔˈpaː.kʊs] (modern Italianate Ecclesiastical) IPA(key): [oˈpaː.kus] === Adjective === opācus (feminine opāca, neuter opācum); first/second-declension adjective shaded, darkened; in the shade shady, dark; casting shade obscure opaque Synonym: obscūrus Antonyms: lūcidus, clārus ==== Declension ==== First/second-declension adjective. ==== Derived terms ==== opācitās opācō ==== Descendants ==== === References === “opacus”, in Charlton T. Lewis and Charles Short (1879), A Latin Dictionary, Oxford: Clarendon Press “opacus”, in Charlton T. Lewis (1891), An Elementary Latin Dictionary, New York: Harper & Brothers “opacus”, in Gaffiot, Félix (1934), Dictionnaire illustré latin-français, Hachette. === Further reading === “opacus”, in Charlton T. Lewis and Charles Short (1879), A Latin Dictionary, Oxford: Clarendon Press