Like all Romance languages, nouns have grammatical gender; every noun has a value of either masculine or feminine.
Most masculine nouns end in ‑u. Most feminine nouns end in ‑a. Some nouns end in ‑e, and may be either masculine or feminine. (Nouns and adjectives that end in ‑e usually come from Latin terms ending in ‑is.)
The plurals of nouns are very regular: Masculine noun plurals always end in -is, while feminine plurals end in -es.
| Singular | Plural | |
| Masculine | oucl-u, ‘eye’ mar-e, ‘sea’ |
oucl-is, ‘eyes’ mar-is, ‘seas’ |
| Feminine | uricl-a, ‘ear’ niv-e, ‘snow’ |
uricl-es, ‘ears’ niv-es, ‘snows’ |
Masculine nouns ending in a diphthong (that is, ⟨au⟩, ⟨aou⟩, ⟨eu⟩, or ⟨eou⟩) have a slightly odd shift, because the u of those vowel clusters actually comes from an earlier l, which remains in the plural forms. When this occurs in adjectives, the feminine singular form also has an l.
| Singular | Plural | |
| Masculine | m-eou, ‘honey’ gindr-au, ‘general’ |
m-elis, ‘honeys’ gindr-alis, ‘generals’ |
Feminine nouns ending in ‑tja (from Latin ‑tiō) have an irregular plural which restores the n in the ending of the plural form.
| Singular | Plural | |
| Feminine | ac-tja, ‘action’ iunc-tja, ‘junction’ |
ac-tjones, ‘actions’ iunc-tjones, ‘junctions’ |