Irregular Nouns: vis, bos, senex
Learn these nouns by their stems: vir-, bov-, sen- and Iov-.
How It Works
| Case | vis | bos | senex |
|---|---|---|---|
| nominative | vis | bos | senex |
| genitive | vis | bovis | senis |
| dative | vi | bovi | seni |
| accusative | vim | bovem | senem |
| ablative | vi | bove | sene |
| plural nominative | vires | boves | senes |
| plural genitive | virium | boum | senum |
| plural dative and ablative | viribus | bobus | senibus |
Iuppiter has Iovis in the genitive, Iovi in the dative, Iovem in the accusative and Iove in the ablative.
The singular vis means force, and the plural vires means strength. The plural genitive of bos is boum, and bovum is a rarer form.
Build every case from the stem the genitive shows, never from the nominative.
Examples (5)
- Vim vi repellere licet.
It is lawful to repel force with force.
A well-known legal saying. Vim is the accusative and vi is the ablative of vis.
- Magnis viribus Marcus saxum movet.
Marcus moves the rock with great strength.
Viribus is the ablative plural of vis, and the plural means strength.
- Senex bovem ad aquam ducit.
The old man leads the ox to the water.
Senex is the nominative and bovem is the accusative, with the stem bov-.
- Cognovit bos possessorem suum, et asinus praesepe domini sui.
The ox knows its owner, and the donkey its lord's manger.
Isaiah 1:3. Bos is the nominative singular.
- Romani Iovi templum aedificant.
The Romans build a temple for Jupiter.
Iovi is the dative of Iuppiter.
Common Mistakes
Building a case from the nominative.
Senex bosem ad aquam ducit.Senex bovem ad aquam ducit.The accusative comes from the stem bov-, which the genitive bovis shows. Never add the ending to the nominative bos.
How It Connects
Learn This First
These nouns bend the rules of the third family.
Related Patterns
- Third Declension: rex, regis
The regular pattern these nouns change.
Level 3 - Which Gender Is It?
Bos can be masculine or feminine.
Level 4 - Third Declension: Accusative -em, -es
The accusative endings of bovem and senem.
Level 3 - Third Declension: Genitive -is, -um, -ium
The genitive endings, including boum and virium.
Level 3