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Allen & Greenough · Part First — Words and Forms › FIRST AND SECOND DECLENSIONS (ā- AND o-STEMS)

§110. FIRST AND SECOND DECLENSIONS (ā- AND o-STEMS)

Adjectives of the First and Second Declensions (ā- and o-stems) are declined in the Masculine like servus, puer, or ager; in the Feminine like stella; and in the Neuter like bellum.

The regular type of an adjective of the First and Second Declensions is bonus, -a, -um, which is thus declined:—

bonus, bona, bonum, good
MASCULINE STEM bono-FEMININE STEM bonā-NEUTER STEM bono-
SINGULAR
NOM.bonusbonabonum
GEN.bonībonaebonī
DAT.bonōbonaebonō
ACC.bonumbonambonum
ABL.bonōbonābonō
VOC.bonebonabonum
PLURAL
NOM.bonībonaebona
GEN.bonōrumbonārumbonōrum
DAT.bonīsbonīsbonīs
ACC.bonōsbonāsbona
ABL.bonīsbonīsbonīs
NOM. propincus (-quos)propinquapropincum (-quom)
GEN. propinquīpropinquaepropinquī, etc.

But most modern editions disregard this principle.

a. The Genitive Singular masculine of adjectives in -ius ends in -iī, and the Vocative in -ie; not in -ī, as in nouns (cf. § 49. b, c); as, Lacedaemonius, -iī, -ie.

J. H. Allen and J. B. Greenough, New Latin Grammar (Boston: Ginn, 1903). Text provided under a CC BY-SA license by Perseus Digital Library, http://www.perseus.tufts.edu, with funding from the National Endowment for the Humanities.