Latin Declension Rules | Latin Declensions > Fourth Declension
The Fourth declension nouns in Latin are sometimes called -u stem nouns. They may be masculine, feminine, or neuter. The verbal nouns called supine are generally fourth declension accusatives or ablatives.
The endings of the masculine (sometimes feminine) Fourth declension are
singular
nominative -us
genitive -us
dative -ui
accusative -um
ablative -u
plural
nominative -us
genitive -uum
dative -ibus or ubus
accusative -us
ablative -ibus or ubus
singular
- Nominative - manus
- Genitive- manus
- Dative - manui, manu
- Accusative - manum
- Ablative - manu
- Locative mani
- Vocative manus
plural Plural
- Nominative - manus
- Genitive - manuum
- Dative - manibus, (manubus)
- Accusative - manus
- Ablative - manibus, (manubus)
- Locative - manibus, (manubus)
- Vocative - manus
There is nothing special about the fourth declension neuter. The nominative and accusative end in "-u" in the singular and in "-ua" in the plural. The genitive singular and the nominative and accusative plural have long "-u" in their endings.
