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 | FEMININE | |||
STEM bono- | STEM boná- | STEM bono- | |||
SINGULAR | NOM. | bonus | |||
GEN. | boní | bonae | boní | ||
DAT. | bonó | bonae | bonó | ||
ACC. | bonum | bonam | bonum | ||
ABL. | bonó | boná | bonó | ||
VOC. | bone | bona | bonum | ||
PLURAL | NOM. | boní | |||
GEN. | bonórum | bonárum | bonórum | ||
DAT. | bonís | bonís | bonís | ||
ACC. | bonós | bonás | bona | ||
ABL. | bonís | bonís | bonís |
NOTE: Stems in quo- have nominative -cus (-quos), -qua, -cum (-quom), accusative -cum (-quom), -quam, -cum (-quom), to avoid quu- (see §§ 6. b and 46. N. 2). Thus, -
NOM. | propinous (-quos) | propinqua | propinoum (-quom) |
GEN. | propinquí | propinquae | propinquí, etc. |
a. The Genitive Singular masculine of adjectives in -ius ends in -ií, and the Vocative in -ie; not in -í, as in nouns (cf. § 49. b, c); as, Lacedaemonius, -ií, -ie.
NOTE: The possessive meus, my, has the vocative masculine mí (cf. § 145).