LATIN DICTIONARYLexicon Latīnum
proper noun · masculinesecond declension

Karolus

Karolus m sg (genitive Karolī)
Classical[ˈka.rɔ.ɫʊs]Ecclesiastical[ˈkaː.ro.lus]

Meaning

  1. Medieval Latinmasculinesingulara male given name from Old High German Karl [in turn from Proto-Germanic *karilaz (“free man”)], variant of Carolus, equivalent to English Karl, Carl, or Charles
    KAROLVS IMP[ERATOR] AVG[VSTVS]Charles, Emperor Augustusc. 812 CE – 814 CE, denarius
    Pipinus rex genuit Karolum et Karlomannum et Gislam ex Bertrada regina.King Pippin begat Charles and Carloman and Gisla from Queen Bertrada.951 CE – 959 CE, Witgerus, Genealogica Arnulfi:

Declension

declension
formsingularplural
nominativeKarolus—
genitiveKarolī—
dativeKarolō—
accusativeKarolum—
ablativeKarolō—
vocativeKarole—

Quick answers

What does Karolus mean in Latin?
Karolus, a proper noun, means “a male given name from Old High German Karl [in turn from Proto-Germanic *karilaz (“free man”)], variant of Carolus, equivalent to English Karl, Carl, or Charles”.
What is the genitive of Karolus?
The genitive singular is Karolī. Karolus is masculine, second declension.
How do you pronounce Karolus?
In classical Latin, [ˈka.rɔ.ɫʊs]; in ecclesiastical (church) Latin, [ˈkaː.ro.lus].