perfidus
Latin
Etymology
From per (“through, along”) + fidēs (“faith; trust”).
Pronunciation
- (Classical Latin) IPA(key): /ˈper.fi.dus/, [ˈpɛrfɪd̪ʊs̠]
- (modern Italianate Ecclesiastical) IPA(key): /ˈper.fi.dus/, [ˈpɛrfid̪us]
Adjective
perfidus (feminine perfida, neuter perfidum); first/second-declension adjective
- That breaks his promise; faithless, false, dishonest, treacherous, perfidious, deceitful.
- (by extension) Treacherous, unsafe, dangerous.
Declension
First/second-declension adjective.
Number | Singular | Plural | |||||
---|---|---|---|---|---|---|---|
Case / Gender | Masculine | Feminine | Neuter | Masculine | Feminine | Neuter | |
Nominative | perfidus | perfida | perfidum | perfidī | perfidae | perfida | |
Genitive | perfidī | perfidae | perfidī | perfidōrum | perfidārum | perfidōrum | |
Dative | perfidō | perfidō | perfidīs | ||||
Accusative | perfidum | perfidam | perfidum | perfidōs | perfidās | perfida | |
Ablative | perfidō | perfidā | perfidō | perfidīs | |||
Vocative | perfide | perfida | perfidum | perfidī | perfidae | perfida |
Antonyms
Derived terms
Related terms
Descendants
- English: perfidious
- French: perfide
- German: perfide
- Italian: perfido
- Portuguese: pérfido
- Spanish: pérfido
References
- “perfidus”, in Charlton T. Lewis and Charles Short (1879) A Latin Dictionary, Oxford: Clarendon Press
- “perfidus”, in Charlton T. Lewis (1891) An Elementary Latin Dictionary, New York: Harper & Brothers
- perfidus in Gaffiot, Félix (1934) Dictionnaire illustré latin-français, Hachette.