LATIN DICTIONARYLexicon Latīnum
nounfirst declension

fēlīx culpa

fēlīx culpa f (genitive fēlīcis culpae)
Classical[ˈfeː.liːks ˈkʊɫ.pa]Ecclesiastical[ˈfɛː.liks ˈkul.pa]

Meaning

  1. blessed fault, fortunate fall, used in reference to the Fall of Man.
    1265-1274. Thomas Aquinas, Summa Theologica, III, 1, 3, ad 3, O felix culpa!
    O felix culpa quae talem et tantum meruit habere redemptorem. ("O happy fault that earned us so good and great a Redeemer."), Traditional Latin Mass, and Exsultet of the Easter Vigil masses

Declension

declension
formsingularplural
nominativefēlīx culpafēlīcēs culpae
genitivefēlīcis culpaefēlīcium culpārum
dativefēlīcī culpaefēlīcibus culpīs
accusativefēlīcem culpamfēlīcīs culpās
fēlīcēs culpās
ablativefēlīcī culpā
fēlīce culpā		fēlīcibus culpīs
vocativefēlīx culpafēlīcēs culpae

Origins

From fēlīx (“happy”) + culpa (“fault, blame”).

Quick answers

What does fēlīx culpa mean in Latin?
fēlīx culpa, a noun, means “blessed fault, fortunate fall, used in reference to the Fall of Man.”.
What is the genitive of fēlīx culpa?
The genitive singular is fēlīcis culpae. fēlīx culpa is first declension.
How do you pronounce fēlīx culpa?
In classical Latin, [ˈfeː.liːks ˈkʊɫ.pa]; in ecclesiastical (church) Latin, [ˈfɛː.liks ˈkul.pa].