621. The only consonant stems of two endings are comparatives (346);
they are declined as follows:
+--------+-----------------------------------------------------------+
| Example| M. and F. trīstior, Ne. trīstius, _sadder_, |
| Stems | trīstiōr-, trīstius-. |
+--------+----------------------------+------------------------------+
| | Singular. | Plural. |
| +----------------------------+------------------------------+
| | MASC. AND FEM. NEUT. | MASC. AND FEM. NEUT. |
| _Nom._ | trīstior trīstius | trīstiōrēs trīstiōra |
| _Gen._ | trīstiōris trīstiōris | trīstiōrum trīstiōrum |
| _Dat._ | trīstiōrī trīstiōrī | trīstiōribus trīstiōribus |
| _Acc._ | trīstiōrem trīstius | trīstiōres trīstiōra |
| _Abl._ | trīstiōre trīstiōre | trīstiōribus trīstiōribus |
+--------+----------------------------+------------------------------+
622. The ablative rarely has #-ī# for #-e#: as, #meliōrī# (503); the
accusative plural masculine and feminine rarely have #-īs#: as,
#meliōrīs# (505).
623. #plūs#, _more_, has in the singular only Ne. N. and Ac. #plūs#, G.
#plūris#, and Ab. #plūre#. Plural: N. M. and F. #plūrēs#, Ne. #plūra#,
G. #plūrium#, D. and Ab. #plūribus#, Ac. M. and F. #plūrēs# or #plūrīs#,
Ne. #plūra#. #complūrēs#, _a good many_, plural only, has N. M. and F.
#complūrēs#, Ne. N. and Ac. #complūria# or #complūra#, G. #complūrium#,
D. and Ab. #complūribus#, Ac. M. and F. #complūrēs# or #complūrīs#.