632. Most adjectives ‘of one ending’ have a consonant form of the stem
in the singular, except usually in the ablative (633), and an #-i-# stem
in the plural; they are declined as follows:
+--------+-------------------------+-----------------------------+
| Example| M. F. and Ne. audāx, | M. F. Ne. regēns, _ruling_, |
| | _bold_, | |
| Stems | audāc(i)- | regent(i)- |
+--------+-------------------------+-----------------------------+
|Singular| MASC. & FEM. NEUT. | MASC. & FEM. NEUT. |
| _Nom._ | audāx audāx | regēns regēns |
| _Gen._ | audācis audācis | regentis regentis |
| _Dat._ | audācī audācī | regentī regentī |
| _Acc._ | audācem audāx | regentem regēns |
| _Abl._ | audācī audācī | regente, -ī regente, -ī |
+--------+-------------------------+-----------------------------+
| Plural | MASC. & FEM. NEUT. | MASC. & FEM. NEUT. |
| _Nom._ | audācēs audācia | regentēs regentia |
| _Gen._ | audācium audācium | regentium regentium |
| _Dat._ | audācibus audācibus | regentibus regentibus |
| _Acc._ | audācīs, -ēs audācia | regentīs, -ēs regentia |
| _Abl._ | audācibus audācibus | regentibus regentibus |
+--------+-------------------------+-----------------------------+
633. Present participles have #-ī# in the ablative, when they are used
as adjectives, otherwise #-e# (560). For #-ī# or #-e# in other words,
see 559, 561. For #-ium# or #-um# in the genitive plural, 563.
634. Most adjectives ‘of one ending’ in #-i-# are declined as above
(632); some of them have peculiarities in some of their cases, as
follows:
635. (1.) #trux# (531), _savage_, has Ab. #-ī# or #-e#, G. Pl. #-ium#,
no Ne. Pl. N. or Ac. #redux# (531), _returning_, has Ab. #-ī# or #-e#,
no G. Pl. or Ne. Pl. N. or Ac. #hebes#, _dull_, #teres#, _cylindrical_
(533), and compounds of #caput#, _head_, as #anceps#, (533),
_two-headed_, have Ab. #-ī#, no G. Pl.; a Ne. Pl. N. or Ac. #-ia# is
rare. For #locuplēs#, _rich_, see 533.
636. (2.) The following have #-ī# in the ablative, but #-um# of
consonant stems in the genitive plural, and no nominative or accusative
neuter plural: #inops# (535), _without means_, #vigil# (536),
_wide-awake_, #memor# (537), _remembering_, #dēgener#, _degenerate_,
ūber (537), _prolific_, has Ab. #-ī#, twice #-e#, Ne. Pl. once #-a#
(Acc.). Compounds of #pēs#, as, #bipēs# (532), _two-legged_, have a late
and rare Ne. Pl. N. and Ac. #-ia#.