perfidia

See also: perfídia

Italian

Etymology

Borrowed from Latin perfidia.

Pronunciation

• IPA^(key): /perˈfi.dja/
• Rhymes: -idja
• Hyphenation: per‧fì‧dia

Noun

perfidia f (plural perfidie)

1. perfidy

Derived terms

• perfidiare
• perfidioso

Related terms

• perfido

Further reading

• perfidia in Collins Italian-English Dictionary
• perfidia in Luciano Canepari, Dizionario di Pronuncia Italiana (DiPI)
• perfidia in Aldo Gabrielli, Grandi Dizionario Italiano (Hoepli)
• perfidia in garzantilinguistica.it – Garzanti Linguistica, De Agostini Scuola Spa
• perfìdia in Dizionario Italiano Olivetti, Olivetti Media Communication
• perfìdia in Treccani.it – Vocabolario Treccani on line, Istituto dell'Enciclopedia Italiana

Latin

Etymology

Etymology tree

Latin perfidus

Proto-Indo-European *-yós

Proto-Italic *-ios

Old Latin -ios

Latin -ius

Latin -ia

Latin perfidia

From perfidus + -ia.

Pronunciation

• (Classical Latin) IPA^(key): [pɛrˈfɪ.di.a]
• (modern Italianate Ecclesiastical) IPA^(key): [perˈfiː.di.a]

Noun

perfidia f (genitive perfidiae); first declension

1. faithlessness, dishonesty, treachery, falsehood, perfidy

   Synonyms: fraus, dolus, maleficium, dēceptiō, stratēgēma, ars

Declension

First-declension noun.

	singular	plural
nominative	perfidia	perfidiae
genitive	perfidiae	perfidiārum
dative	perfidiae	perfidiīs
accusative	perfidiam	perfidiās
ablative	perfidiā	perfidiīs
vocative	perfidia	perfidiae

Descendants

• → Catalan: perfídia
• → French: perfidie
  • → German: Perfidie
  • → English: perfidy
• Italian: perfidia
• Old Galician-Portuguese: perfia
  • Portuguese: porfia
  • Galician: porfía
• → Polish: perfidia
• → Portuguese: perfídia
• Spanish: porfía

References

• “perfidia”, in Charlton T. Lewis and Charles Short (1879), A Latin Dictionary, Oxford: Clarendon Press
• “perfidia”, in Charlton T. Lewis (1891), An Elementary Latin Dictionary, New York: Harper & Brothers
• “perfidia”, in Gaffiot, Félix (1934), Dictionnaire illustré latin-français, Hachette.

Polish

Etymology

Etymology tree

Latin perfidus

Proto-Indo-European *-yós

Proto-Italic *-ios

Old Latin -ios

Latin -ius

Latin -ia

Latin perfidialbor.

Polish perfidia

Learned borrowing from Latin perfidia.

Pronunciation

• IPA^(key): /pɛrˈfi.dja/
• Rhymes: -idja
• Syllabification: per‧fi‧dia

Noun

perfidia f

1. perfidy (act of violating faith or allegiance)

   Synonym: przebiegłość

Declension

Declension of perfidia

	singular
nominative	perfidia
genitive	perfidii
dative	perfidii
accusative	perfidię
instrumental	perfidią
locative	perfidii
vocative	perfidio

Related terms

adjective

• perfidny

adverb

• perfidnie

Further reading

• “perfidia”, in Wielki słownik języka polskiego‎^[1] (in Polish), Instytut Języka Polskiego PAN
• “perfidia”, in Polish dictionaries at PWN‎^[2] (in Polish)

Spanish

Etymology

Borrowed from Latin perfidia. Doublet of porfía.

Pronunciation

• IPA^(key): /peɾˈfidja/ [peɾˈfi.ð̞ja]
• Rhymes: -idja
• Syllabification: per‧fi‧dia

Noun

perfidia f (plural perfidias)

1. perfidy

Related terms

• pérfido

Further reading

• “perfidia”, in Diccionario de la lengua española [Dictionary of the Spanish Language] (in Spanish), online version 23.8.1, Royal Spanish Academy [Spanish: Real Academia Española], 15 December 2025