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From perspic(iō) +‎ -uus.



perspicuus (feminine perspicua, neuter perspicuum); first/second declension

  1. transparent, clear
  2. evident, manifest, perspicuous


First/second declension.

Number Singular Plural
Case / Gender Masculine Feminine Neuter Masculine Feminine Neuter
nominative perspicuus perspicua perspicuum perspicuī perspicuae perspicua
genitive perspicuī perspicuae perspicuī perspicuōrum perspicuārum perspicuōrum
dative perspicuō perspicuō perspicuīs
accusative perspicuum perspicuam perspicuum perspicuōs perspicuās perspicua
ablative perspicuō perspicuā perspicuō perspicuīs
vocative perspicue perspicua perspicuum perspicuī perspicuae perspicua


  • perspicuus in Charlton T. Lewis and Charles Short (1879) A Latin Dictionary, Oxford: Clarendon Press
  • perspicuus in Charlton T. Lewis (1891) An Elementary Latin Dictionary, New York: Harper & Brothers
  • perspicuus” in Félix Gaffiot’s Dictionnaire Illustré Latin-Français, Hachette (1934)
  • Carl Meissner; Henry William Auden (1894) Latin Phrase-Book[1], London: Macmillan and Co.
    • to speak in clear, expressive language: perspicue, diserte dicere
    • from this it appears, is apparent: ex quo perspicuum est