§50. Case-Forms in the Second Declension

The following stems in ero-, in which e belongs to the stem, retain the e throughout and are declined like puer (§ 47):—

Also, the adjective līber, free, of which līberī, children, is the plural (§ 111. a), and compounds in -fer and -ger (stem fero-, gero-): as, lūcifer, morning star; armiger, squire.

a. An old nominative socerus occurs. So vocative puere, boy, as if from †puerus (regularly puer).

b. Vir, man, has genitive virī; the adjective satur, sated, has saturī; vesper, evening, has ablative vespere (locative vesperī, in the evening).

c. Mulciber, Vulcan, has -berī and -brī in the genitive. The barbaric names Hibēr and Celtibēr retain ē throughout.