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ADJECTIVES OF THE THIRD DECLENSION 113

LESSON XLV

'ADJECTIVES OF THE THIRD DECLENSION • Ī-STEMS

250. Adjectives are either of the first and second declensions (like bonus, aeger, or līber), or they are of the third declension.

251. Nearly all adjectives of the third declension have i-stems, and they are declined almost like nouns with i-stems.

252. Adjectives learned thus far have had a different form in the nominative for each gender, as, bonus, m.; bona, f.; bonum, n. Such an adjective is called an adjective of three endings. Adjectives of the third declension are of the following classes:

I.	Adjectives of three endings— a different form in the nominative for each gender.
II.	Adjectives of two endings— masculine and feminine nominative alike, the neuter different.
III.	Adjectives of one ending— masculine, feminine, and neuter nominative all alike.

253. Adjectives of the third declension in -er have three endings; those in -is have two endings; the others have one ending.

CLASS I

254. Adjectives of Three Endings are declined as follows:

	ācer, ācris, ācre, keen, eager
		Stem ācri-		Base ācr-
	Singular			Plural
	MASC.	FEM.	NEUT.	MASC.	FEM.	NEUT.
Nom.	ācer	ācris	ācre	ācrēs	ācrēs	ācria
Gen.	ācris	ācris	ācris	ācrium	ācrium	ācrium
Dat.	ācrī	ācrī	ācrī	ācribus	ācribus	ācribus
Acc.	ācrem	ācrem	ācre	ācrīs, -ēs	ācrīs, -ēs	ācria
Abl.	ācrī	ācrī	ācrī	ācribus	ācribus	ācribus