Answer by
Clement (1453)
"Virtus", manliness/virtue in Latin, is a popular example illustrating the third declension of nouns. Recall that declension is inflection in, e. g. , nouns reflecting change in case. Other nouns of this group, such as civitas, urbs, antiquitas, follow the same pattern. Single Plural
nominative virtus virtutes
accusative virtutem virtutes
genitive virtutis virtutum
dative virtuti virtutibus
ablative virtute virtutibus