opacus Latin · revision 5710
16 Oct 2026, 03:24 by bogdan “New Latin entry (sources: de Vaan, OLD, Lewis & Short, TLL...)” current version
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+ {{infobox|confidence=unknown|attested=Lucretius}}
+
+ ==Pronunciation==
+ * IPA (Classical): [ɔˈpaː.kʊs]^(Wiktionary)
+ * IPA (Ecclesiastical): [oˈpaː.kus]^(Wiktionary)
+
+ ==Forms==
+ '''opācus''' (feminine opāca, neuter opācum); first/second-declension adjective^(Wiktionary)
+
+ ==Etymology==
+ Its origin is unknown.^(de Vaan 2008)^(Wiktionary)^(OLD 2012) It has long been compared with [[sa|अपाक|tr=ápāka-|t=turned away]] and [[ru|опако|tr=opako|t=backwards]], but these go back to *h₂epo-h₃kʷ- and would give Latin *apōcus.^(de Vaan 2008)^(TLL) De Vaan mentions a possible *op-wāko- “towards the empty side”, from the root of [[vacuus]] and [[vānus]], as only a theoretical possibility.^(de Vaan 2008) It is the opposite of [[aprīcus]] “sunny”.^(Wiktionary)
+
+ ==Earliest recorded meaning==
+ De Vaan dates it from Lucretius, Köbler from Cicero, who strolls on a green and shady river bank among tall poplars.^(de Vaan 2008)^(Köbler 2010)^(OLD 2012) Köbler dates Lucretius 96–55 BC and Cicero 81–43 BC.^(Köbler 2010)
+
+ ==Semantic evolution==
+ It meant sheltered from the sun, shady, as Cicero's bank and Virgil's cool shade, and giving dense shade, as Virgil's elm in the underworld.^(OLD 2012)^(Gaffiot 2016) Of night and darkness it meant dark and dim, as Lucretius' sun shining through a dark storm.^(OLD 2012)
+
+ It survives in [[es|obago]] and Catalan ''obac'' “shady slope”, and [[en|opaque]] was taken from it in the early 15th century, “dark, shaded”, with its spelling later changed after French.^(Wiktionary)^(Etymonline)
+
+ ==Timeline==
+ * 96–55 BC – Lucretius speaks of a dark storm.^(OLD 2012)^(Köbler 2010)
+ * 81–43 BC – Cicero speaks of a shady river bank.^(OLD 2012)^(Köbler 2010)
+ * 70–19 BC – Virgil speaks of the cool shade.^(Gaffiot 2016)^(Köbler 2010)
+ * early 15th century – English ''opaque'' is recorded.^(Etymonline)
+
+ ==Meanings==
+ ===Adjective===
+ # Sheltered from the sun, [[m|en|shady]].^(OLD 2012)
+ # Giving dense shade.^(OLD 2012)
+ # Dark, dim.^(OLD 2012)
+
+ ==Word family==
+ * [[opācitās]]
+ * [[opācō]]
+ * [[peropacus]]
+
+ ==Related words==
+ * [[vacuus]]
+ * [[vānus]]
+ * [[aprīcus]]
+ * [[umbra]]
+ * [[en|opaque]]
+
+ ==References==
+ {{reflist}}