perfidiosus

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Latin

Etymology

From perfidia (“perfidy”) +‎ -ōsus (“-ous”), from perfidus (“faithless”) +‎ -ia (“-ness”), from per (“through”) + fidēs (“trust”), from Proto-Indo-European *per + Proto-Italic *feiðos from root *bʰeydʰ-.

Pronunciation

Adjective

perfidiōsus (feminine perfidiōsa, neuter perfidiōsum, comparative perfidiōsior); first/second-declension adjective

  1. treacherous, perfidious

Declension

First/second-declension adjective.

singular plural
masculine feminine neuter masculine feminine neuter
nominative perfidiōsus perfidiōsa perfidiōsum perfidiōsī perfidiōsae perfidiōsa
genitive perfidiōsī perfidiōsae perfidiōsī perfidiōsōrum perfidiōsārum perfidiōsōrum
dative perfidiōsō perfidiōsae perfidiōsō perfidiōsīs
accusative perfidiōsum perfidiōsam perfidiōsum perfidiōsōs perfidiōsās perfidiōsa
ablative perfidiōsō perfidiōsā perfidiōsō perfidiōsīs
vocative perfidiōse perfidiōsa perfidiōsum perfidiōsī perfidiōsae perfidiōsa

Descendants

  • English: perfidious

References

  • “perfidiosus”, in Charlton T. Lewis and Charles Short (1879) A Latin Dictionary, Oxford: Clarendon Press
  • “perfidiosus”, in Charlton T. Lewis (1891) An Elementary Latin Dictionary, New York: Harper & Brothers
  • perfidiosus in Gaffiot, Félix (1934) Dictionnaire illustré latin-français, Hachette, page 1146.
  • perfidiosus in Georges, Karl Ernst, Georges, Heinrich (1913–1918) Ausführliches lateinisch-deutsches Handwörterbuch, 8th edition, volume 2, Hahnsche Buchhandlung, column 1589
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