opacus

Latin

Etymology

Unknown. Possibly related to Ancient Greek παχύς (pakhús, “thick”) or from Proto-Indo-European *apó[1].

Pronunciation
  • (Classical) IPA(key): /oˈpaː.kus/, [ɔˈpaː.kʊs]

Adjective

opācus (feminine opāca, neuter opācum); first/second declension

  1. shaded, darkened; in the shade
  2. shady, dark; casting shade

Inflection

First/second declension.

Number Singular Plural
Case / Gender Masculine Feminine Neuter Masculine Feminine Neuter
Nominative opācus opāca opācum opācī opācae opāca
Genitive opācī opācae opācī opācōrum opācārum opācōrum
Dative opācō opācō opācīs
Accusative opācum opācam opācum opācōs opācās opāca
Ablative opācō opācā opācō opācīs
Vocative opāce opāca opācum opācī opācae opāca

Derived terms

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
  1. Pokorny, Julius (1959), “apo-”, in Indogermanisches etymologisches Wörterbuch [Indo-European Etymological Dictionary] (in German), volume I, Bern, München: Francke Verlag, pages 54-55

Further reading
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