151. Greek Adjective Stems in -εσ
152. a. In the nominative singular -εσ becomes -ης in the masculine and feminine, but remains -ες in the neuter (cp. γένος, 124, 125.a). The -σ- disappears between vowels (55.a) and contractions are regular (29.a, c-e).
σαφοῦς from σαφέος
σαφῆ from σαφέα
σαφεῖς from σαφέες
σαφῶν from σαφέων
In the accusative plural σαφεῖς is borrowed from the nominative. (Cp. 150.)
b. But if -εσ follows a vowel, -έα usually contracts to -ᾶ instead of -ῆ.
ἐνδεής (needy): [ἐνδεέα] ἐνδεᾶ
εὐκλεής (famous): [εὐκλεέα] εὐκλεᾶ
b. But not in the neuter forms in -ῶδες and -ῆρες.
ποδῆρες reaching tο the feet
155. Many adjectives whose masculine and neuter are of the consonant declension have a separate feminine in the α-declension. The feminine singular always has short -α in the nominative, accusative, and vocative singular. (If the masculine and neuter are of the ο-declension, the feminine always has -ᾱ or -η: see 77.a)