LATIN DICTIONARYLexicon Latīnum
conjunction

quodsī

quodsī
Classical[ˈkʷɔs.siː]Ecclesiastical[ˈkʷɔd.si]

Meaning

  1. but if
    quod si iterum mihi sit danda, actum siet.But if another [dinner] had to be provided by me, that'd be the end [of me].163 BCE, Publius Terentius Afer, Heauton Timorumenos III.456
    quodsi viri sui faciem ignorat[…]But if she does not know her own husband's appearance […]Late 2nd century CE, Apuleius, The Golden Ass V.16

Origins

Proto-Indo-European *sóder. Proto-Italic *sei Latin sī Latin quodsī From quod (adverb) + sī (conjunction).

Quick answers

What does quodsī mean in Latin?
quodsī, a conjunction, means “but if”.
How do you pronounce quodsī?
In classical Latin, [ˈkʷɔs.siː]; in ecclesiastical (church) Latin, [ˈkʷɔd.si].