Latin Nouns of the Fourth Declension - Endings

Please note: Latin Declension Rules

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.