[517]. (1.) Parisyllabic gender stems in -i- with the nominative in -is are declined as follows:
| Examples Stems | tussis, cough, tussi-, F. | turris, tower, turri-, F. | amnis, river, amni-, M. | hostis, enemy, hosti-, M., F. | Stem and case endings |
|---|---|---|---|---|---|
| Singular | |||||
| Nom. | tussis | turris | amnis | hostis | -is |
| Gen. | tussis | turris | amnis | hostis | -is |
| Dat. | tussī | turrī | amnī | hostī | -ī |
| Acc. | tussim | turrim, -em | amnem | hostem | -im, -em |
| Abl. | tussī | turrī, -e | amne, -ī | hoste | -ī, -e |
| Plural | |||||
| Nom. | tussēs | turrēs | amnēs | hostēs | -ēs |
| Gen. | turrium | amnium | hostium | -ium | |
| Dat. | turribus | amnibus | hostibus | -ibus | |
| Acc. | tussīs, -ēs | turrīs, -ēs | amnīs, -ēs | hostīs, -ēs | -īs, -ēs |
| Abl. | turribus | amnibus | hostibus | -ibus |
[518]. (a.) Like the singular of tussis are declined parisyllabic names of rivers and places, like Tiberis, Hispalis. Also cucumis, M., cucumber (but see [491]), and the defectives sitis, F., thirst, Ac. sitim, Ab. sitī, no plural; and vīs, F., power, Ac. vim, Ab. vī. Plural ([401]): N. vīrēs, G. vīrium, D. and Ab. vīribus, Ac. vīrīs or vīrēs. (The D. vī is only found twice; a N. and Ac. Pl. vīs is very rare.)
[519]. (b.) The following feminines are declined like turris, with -im or -em in the accusative, and -ī or -e in the ablative:
clāvis, key
febris, fever
nāvis, vessel
puppis, stern
sēmentis, planting
strigilis, skin-scraper