Genitive Plural: -arum and -orum

Level 2

Two endings for of several.

How It Works

DeclensionNominative pluralGenitive pluralEnglish
firstpuellaepuellarumof the girls
second, masculineamiciamicorumof the friends
second, neuterverbaverborumof the words

Neuter nouns use -orum too: verborum. The genitive plural of the third declension has its own ending, -um or -ium, which you meet at Level 3.

Saeculorum sounds like seh-koo-LOH-room in Church Latin and sye-koo-LOH-room in classical Latin. It is in the prayer in saecula saeculorum.

Stress falls on the syllable before the end: pu-el-LAH-room, a-mi-KOH-room.

Use the rule to read a sentence: libri puellarum is the books of the girls, with puellarum naming the owners.

Examples (5)

  1. Villa amicorum est magna.

    The friends' house is big.

    Amicorum is genitive plural of amicus.

  2. Libri puellarum sunt in villa.

    The girls' books are in the house.

    Puellarum is genitive plural of puella.

  3. Amici puellarum in horto sunt.

    The girls' friends are in the garden.

    Puellarum follows amici.

  4. Verba amicorum audio.

    I hear the words of the friends.

    Verba is the object. Amicorum is genitive plural.

  5. In saecula saeculorum. Amen.

    For ever and ever. Amen.

    Saeculorum is genitive plural: of the ages.

Common Mistakes

  • Using the feminine ending for a group of friends in general.

    Villa amicarum est magna.
    Villa amicorum est magna.

    Amicarum is correct Latin for the house of female friends. For friends in general, or male friends, the plural genitive is amicorum.

How It Connects

Tap a pattern to see what it builds on and what it leads to.

Genitive Plural: -arum and -orumLevel 2

Learn This First

The plural genitive is built on the singular one, and uses plural forms.

Learn Next

Patterns that build on this one.

Words in This Pattern

-um