Allen and Greenough's New Latin Grammar for Schools and Colleges
J. B. Greenough, G. L. Kittredge, A. A. Howard, Benj. L. D'Ooge, Ed.

[*] a. Adjectives denoting desire, knowledge, memory, fulness, power, sharing, guilt, and their opposites govern the genitive:—

1. “avidī laudis ” (Manil. 7) , greedy of praise.
2. fastīdiōsus litterārum, disdaining letters.
3. iūris perītus, skilled in law. [So also the ablative, iūre , cf. § 418.]
4. “memorem vestrī, oblītum suī ” (Cat. 4.19) , mindful of you, forgetful of himself.
5. “ ratiōnis et ōrātiōnis expertēs ” (Off. 1.50) , devoid of sense and speech.
nostrae cōnsuētūdinis imperītī; (B. G. 4.22), unacquainted with our customs.
6. plēnus fideī, full of good faith.
7. “omnis speī egēnam ” (Tac. Ann. 1.53) , destitute of all hope.
8. “ tempestātum potentem ” (Aen. 1.80) , having sway over the storms.
9. “impotēns īrae ” (Liv. 29.9.9) , ungovernable in anger.
10. “ coniūrātiōnis participēs ” (Cat. 3.14) , sharing in the conspiracy.
11. “affīnis reī capitālis ” (Verr. 2.2.94) , involved in a capital crime.
12. “īnsōns culpae ” (Liv. 22.49) , innocent of guilt.

[*] b. Participles in -ns govern the genitive when they are used as adjectives, i.e. when they denote a constant disposition and not a particular act:—

sī quem tuī amantiōrem cōgnōvistī; (Q. Fr. 1.1.15), if you have become acquainted with any one more fond of you.
1. “multitūdō īnsolēns bellī ” (B. C. 2.36) , a crowd unused to war.
2. “erat Iugurtha appetēns glōriae mīlitāris ” (Iug. 7) , Jugurtha was eager for military glory.

[*] Note 1.--Participles in -ns, when used as participles, take the case regularly governed by the verb to which they belong: as,—Sp. Maelium rēgnum appetentem interēmit (Cat. M. 56), he put to death Spurius Mælius, who was aspiring to royal power.

[*] Note 2.--Occasionally participial forms in -ns are treated as participles (see note 1) even when they express a disposition or character: as,virtūs quam aliī ipsam temperantiam dīcunt esse, “aliī obtemperantem temperantiae praeceptīs et eam subsequentem” (Tusc. 4.30) , observant of the teachings of temperance and obedient to her.

[*] c. Verbals in -āx (§ 251) govern the genitive in poetry and later Latin:—

1. “iūstum et tenācem prōpositī virum ” (Hor. Od. 3.3) , a man just and steadfast to his purpose.
2. “circus capāx populī ” (Ov. A. A. 1.136) , a circus big enough to hold the people.
3. “cibī vīnīque capācissimus ” (Liv. 9.16.13) , a very great eater and drinker (very able to contain food and wine).

[*] d. The poets and later writers use the genitive with almost any adjective, to denote that with reference to which the quality exists (Genitive of Specification):—

1. “callidus reī mīlitāris ” (Tac. H. 2.32) , skilled in soldiership.
2. “pauper aquae ” (Hor. Od. 3.30.11) , scant of water.
3. nōtus animī paternī (id. 2.2.6), famed for a paternal spirit.
4. “fessī rērum ” (Aen. 1.178) , weary of toil.
5. “integer vītae scelerisque pūrus ” (Hor. Od. 1.22.1) , upright in life, and unstained by guilt.

[*] Note.--The Genitive of Specification is only an extension of the construction with adjectives requiring an object of reference (§ 349). Thus callidus denotes knowledge; pauper, want; pūrus, innocence; and so these words in a manner belong to the classes under a.

For the Ablative of Specification, the prose construction, see § 418. For Adjectives of likeness etc. with the Genitive, apparently Objective, see § 385. c. For Adjectives with animī (locative in origin), see § 358.