First Declension III

266

Genitive Singular.—An old form in -âî is sometimes found in poetry; as ăquă water, Genitive ăquai.  fămĭlîă household has an old Genitive fămĭli-âs, used only in composition with păter, mâter, fîlius.  See § 279.

Genitive Plural.—A form in -um instead of ârum is sometimes used in poetry from words of Greek origin, especially Patronymics, as Aenĕădae descendants of Aeneas, Genitive Aenĕădum, and words ending in -gĕnă, -cŏlă, as caelĭcŏlă, dweller in heaven, Genitive Plural, caelicolum.  drâchmum of drachmæ, amphŏrum of amphoræ occur in prose.

Dative and Ablative Plural in -ăbŭs.—Three words only in classical authors use this form:  dĕă goddess, fîliă daughter, lîbertă freed-woman.