From perīculum (an attempt, risk) +‎ -ōsus.


  • (Classical) IPA(key): /pe.riː.kuˈloː.sus/, [pɛɾiːkʊˈɫ̪oːs̠ʊs̠]
  • (Ecclesiastical) IPA(key): /pe.ri.kuˈlo.sus/, [pɛɾikuˈlɔːs̬us]
  • (file)


perīculōsus (feminine perīculōsa, neuter perīculōsum, superlative perīculōsissimus, adverb perīculōsē); first/second-declension adjective

  1. dangerous, hazardous, perilous
    • c. 4 BCE – 65 CE, Seneca the Younger, De brevitate vitae 15:
      Horum te mori nemo coget, omnes docebunt; horum nemo annos tuos conteret, suos tibi contribuet; nullius ex his sermo periculosus erit, nullius amicitia capitalis, nullius sumptuosa obseruatio.
      No one of these will force you to die, but all will teach you how to die; no one of these will wear out your years, but each will add his own years to yours; conversations with no one of these will bring you peril, the friendship of none will endanger your life, the courting of none will tax your purse.


First/second-declension adjective.

Number Singular Plural
Case / Gender Masculine Feminine Neuter Masculine Feminine Neuter
Nominative perīculōsus perīculōsa perīculōsum perīculōsī perīculōsae perīculōsa
Genitive perīculōsī perīculōsae perīculōsī perīculōsōrum perīculōsārum perīculōsōrum
Dative perīculōsō perīculōsō perīculōsīs
Accusative perīculōsum perīculōsam perīculōsum perīculōsōs perīculōsās perīculōsa
Ablative perīculōsō perīculōsā perīculōsō perīculōsīs
Vocative perīculōse perīculōsa perīculōsum perīculōsī perīculōsae perīculōsa

Related termsEdit



  • periculosus in Charlton T. Lewis and Charles Short (1879) A Latin Dictionary, Oxford: Clarendon Press
  • periculosus in Charlton T. Lewis (1891) An Elementary Latin Dictionary, New York: Harper & Brothers
  • periculosus in Charles du Fresne du Cange’s Glossarium Mediæ et Infimæ Latinitatis (augmented edition, 1883–1887)
  • periculosus in Gaffiot, Félix (1934) Dictionnaire illustré Latin-Français, Hachette
  • periculosus in Ramminger, Johann (accessed 16 July 2016) Neulateinische Wortliste: Ein Wörterbuch des Lateinischen von Petrarca bis 1700[1], pre-publication website, 2005-2016