[*] 46. Nouns of the Second Declension in -us (-os) and -um (-om) are thus declined:—
| servus , M., slave | bellum , N., war | Pompêius , M., Pompey |
| STEM servo- | STEM bello- | STEM Pompêio- |
| SINGULAR | |||||
| CASE-ENDINGS | CASE-ENDINGS | ||||
| NOM. | servus (-os） | -us (-os） | bellum | -um | Pompêius |
| GEN. | servī | -ī | bellī | -ī | Pompêī |
| DAT. | servō | -ō | bellō | -ō | Pompêiō |
| ACC. | servum (-om） | -um (-om） | bellum | -um | Pompêium |
| ABL. | servō | -ō | bellō | -ō | Pompêiō |
| VOC. | serve | -e | bellum | -um | Pompêī ((--ei ） |
| PLURAL | |||||
| NOM. | servī | -ī | bella | -a | Pompêī |
| GEN. | servōrum | -ōrum | bellōrum | -ōrum | Pompêiōrum |
| DAT. | servīs | -īs | bellīs | -īs | Pompêīs |
| ACC. | servōs | -ōs | bella | -a | Pompêiōs |
| ABL. | servīs | -īs | bellīs | -īs | Pompêīs |
[*] Note 1.--The earlier forms for nominative and accusative were -os, -om, and these were always retained after u and v up to the end of the Republic. The terminations s and m are sometimes omitted in inscriptions: as, Cornēlio for Cornēlios , Cornēliom.
[*] Note 2.--Stems in quo-, like equo-, change qu to c before u. Thus, ecus (earlier equos ), equī , equō , ecum (earlier equom ), eque . Modern editions disregard this principle.